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Dit is echter niet verplicht." class=""><span>Account aanmaken</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Speciaal:Aanmelden&returnto=Diafragmagetal" title="U wordt van harte uitgenodigd om aan te melden, maar dit is niet verplicht [o]" accesskey="o" class=""><span>Aanmelden</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Meer opties" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Persoonlijke hulpmiddelen" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Persoonlijke hulpmiddelen</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Gebruikersmenu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_nl.wikipedia.org&uselang=nl"><span>Doneren</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Speciaal:GebruikerAanmaken&returnto=Diafragmagetal" title="Registreer u vooral en meld u aan. 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class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>In de praktijk</span> </div> </a> <button aria-controls="toc-In_de_praktijk-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>In de praktijk-subkopje inklappen</span> </button> <ul id="toc-In_de_praktijk-sublist" class="vector-toc-list"> <li id="toc-Diafragma_standen" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Diafragma_standen"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Diafragma standen</span> </div> </a> <ul id="toc-Diafragma_standen-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Zie_ook" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Zie_ook"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Zie ook</span> </div> </a> <ul id="toc-Zie_ook-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Inhoud" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Inhoudsopgave omschakelen" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Inhoudsopgave omschakelen</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Diafragmagetal</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ga naar een artikel in een andere taal. Beschikbaar in 35 talen" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-35" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">35 talen</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/F-nommer" title="F-nommer – Afrikaans" lang="af" hreflang="af" data-title="F-nommer" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%D8%A7%D9%84%D8%A8%D8%A4%D8%B1%D8%A9" title="عدد البؤرة – Arabisch" lang="ar" hreflang="ar" data-title="عدد البؤرة" data-language-autonym="العربية" data-language-local-name="Arabisch" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%9B%D1%96%D0%BA_%D0%B4%D1%8B%D1%8F%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D1%8B" title="Лік дыяфрагмы – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Лік дыяфрагмы" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9E%D1%82%D0%BD%D0%BE%D1%81%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%B0_%D0%B0%D0%BF%D0%B5%D1%80%D1%82%D1%83%D1%80%D0%B0" title="Относителна апертура – Bulgaars" lang="bg" hreflang="bg" data-title="Относителна апертура" data-language-autonym="Български" data-language-local-name="Bulgaars" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%8F%E0%A6%AB-%E0%A6%A8%E0%A6%BE%E0%A6%AE%E0%A7%8D%E0%A6%AC%E0%A6%BE%E0%A6%B0" title="এফ-নাম্বার – Bengaals" lang="bn" hreflang="bn" data-title="এফ-নাম্বার" data-language-autonym="বাংলা" data-language-local-name="Bengaals" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Nombre_f" title="Nombre f – Catalaans" lang="ca" hreflang="ca" data-title="Nombre f" data-language-autonym="Català" data-language-local-name="Catalaans" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Clonov%C3%A9_%C4%8D%C3%ADslo" title="Clonové číslo – Tsjechisch" lang="cs" hreflang="cs" data-title="Clonové číslo" data-language-autonym="Čeština" data-language-local-name="Tsjechisch" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de badge-Q70894304 mw-list-item" title=""><a href="https://de.wikipedia.org/wiki/Blendenzahl" title="Blendenzahl – Duits" lang="de" hreflang="de" data-title="Blendenzahl" data-language-autonym="Deutsch" data-language-local-name="Duits" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CF%81%CE%B9%CE%B8%CE%BC%CF%8C%CF%82_%CE%B4%CE%B9%CE%B1%CF%86%CF%81%CE%AC%CE%B3%CE%BC%CE%B1%CF%84%CE%BF%CF%82_%CE%B1%CE%BD%CE%BF%CE%AF%CE%B3%CE%BC%CE%B1%CF%84%CE%BF%CF%82" title="Αριθμός διαφράγματος ανοίγματος – Grieks" lang="el" hreflang="el" data-title="Αριθμός διαφράγματος ανοίγματος" data-language-autonym="Ελληνικά" data-language-local-name="Grieks" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/F-number" title="F-number – Engels" lang="en" hreflang="en" data-title="F-number" data-language-autonym="English" data-language-local-name="Engels" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Relativa_truo_de_objektivo" title="Relativa truo de objektivo – Esperanto" lang="eo" hreflang="eo" data-title="Relativa truo de objektivo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/N%C3%BAmero_f_(%C3%B3ptica)" title="Número f (óptica) – Spaans" lang="es" hreflang="es" data-title="Número f (óptica)" data-language-autonym="Español" data-language-local-name="Spaans" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/F_zenbakia_(optika)" title="F zenbakia (optika) – Baskisch" lang="eu" hreflang="eu" data-title="F zenbakia (optika)" data-language-autonym="Euskara" data-language-local-name="Baskisch" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B6%D8%B1%DB%8C%D8%A8_%D8%A7%D9%81" title="ضریب اف – Perzisch" lang="fa" hreflang="fa" data-title="ضریب اف" data-language-autonym="فارسی" data-language-local-name="Perzisch" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Aukkosuhde" title="Aukkosuhde – Fins" lang="fi" hreflang="fi" data-title="Aukkosuhde" data-language-autonym="Suomi" data-language-local-name="Fins" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ouverture_(photographie)" title="Ouverture (photographie) – Frans" lang="fr" hreflang="fr" data-title="Ouverture (photographie)" data-language-autonym="Français" data-language-local-name="Frans" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/F-uimhir" title="F-uimhir – Iers" lang="ga" hreflang="ga" data-title="F-uimhir" data-language-autonym="Gaeilge" data-language-local-name="Iers" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%99%D7%97%D7%A1_%D7%9E%D7%99%D7%A7%D7%95%D7%93" title="יחס מיקוד – Hebreeuws" lang="he" hreflang="he" data-title="יחס מיקוד" data-language-autonym="עברית" data-language-local-name="Hebreeuws" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AB%E0%A5%8B%E0%A4%95%E0%A4%B8_%E0%A4%85%E0%A4%A8%E0%A5%81%E0%A4%AA%E0%A4%BE%E0%A4%A4" title="फोकस अनुपात – Hindi" lang="hi" hreflang="hi" data-title="फोकस अनुपात" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%80%D5%A1%D6%80%D5%A1%D5%A2%D5%A5%D6%80%D5%A1%D5%AF%D5%A1%D5%B6_%D5%A1%D5%B6%D6%81%D6%84" title="Հարաբերական անցք – Armeens" lang="hy" hreflang="hy" data-title="Հարաբերական անցք" data-language-autonym="Հայերեն" data-language-local-name="Armeens" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Bukaan_(fotografi)" title="Bukaan (fotografi) – Indonesisch" lang="id" hreflang="id" data-title="Bukaan (fotografi)" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesisch" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Lj%C3%B3sop" title="Ljósop – IJslands" lang="is" hreflang="is" data-title="Ljósop" data-language-autonym="Íslenska" data-language-local-name="IJslands" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Rapporto_focale" title="Rapporto focale – Italiaans" lang="it" hreflang="it" data-title="Rapporto focale" data-language-autonym="Italiano" data-language-local-name="Italiaans" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/F%E5%80%A4" title="F値 – Japans" lang="ja" hreflang="ja" data-title="F値" data-language-autonym="日本語" data-language-local-name="Japans" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/F_%EA%B0%92" title="F 값 – Koreaans" lang="ko" hreflang="ko" data-title="F 값" data-language-autonym="한국어" data-language-local-name="Koreaans" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/F_skai%C4%8Dius" title="F skaičius – Litouws" lang="lt" hreflang="lt" data-title="F skaičius" data-language-autonym="Lietuvių" data-language-local-name="Litouws" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%8E%E0%B4%AB%E0%B5%8D%E2%80%8C-%E0%B4%B8%E0%B4%82%E0%B4%96%E0%B5%8D%E0%B4%AF" title="എഫ്‌-സംഖ്യ – Malayalam" lang="ml" hreflang="ml" data-title="എഫ്‌-സംഖ്യ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Nombor_f_(fotografi)" title="Nombor f (fotografi) – Maleis" lang="ms" hreflang="ms" data-title="Nombor f (fotografi)" data-language-autonym="Bahasa Melayu" data-language-local-name="Maleis" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9E%D1%82%D0%BD%D0%BE%D1%81%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D0%B5_%D0%BE%D1%82%D0%B2%D0%B5%D1%80%D1%81%D1%82%D0%B8%D0%B5" title="Относительное отверстие – Russisch" lang="ru" hreflang="ru" data-title="Относительное отверстие" data-language-autonym="Русский" data-language-local-name="Russisch" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Clonov%C3%A9_%C4%8D%C3%ADslo" title="Clonové číslo – Slowaaks" lang="sk" hreflang="sk" data-title="Clonové číslo" data-language-autonym="Slovenčina" data-language-local-name="Slowaaks" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AF%81%E0%AE%B5%E0%AE%BF%E0%AE%AF_%E0%AE%B5%E0%AE%BF%E0%AE%95%E0%AE%BF%E0%AE%A4%E0%AE%AE%E0%AF%8D" title="குவிய விகிதம் – Tamil" lang="ta" hreflang="ta" data-title="குவிய விகிதம்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%84%E0%B9%88%E0%B8%B2%E0%B9%80%E0%B8%AD%E0%B8%9F" title="ค่าเอฟ – Thai" lang="th" hreflang="th" data-title="ค่าเอฟ" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/F-stop" title="F-stop – Turks" lang="tr" hreflang="tr" data-title="F-stop" data-language-autonym="Türkçe" data-language-local-name="Turks" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%94%D1%96%D0%B0%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%BE%D0%B2%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Діафрагмове число – Oekraïens" lang="uk" hreflang="uk" data-title="Діафрагмове число" data-language-autonym="Українська" data-language-local-name="Oekraïens" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%84%A6%E6%AF%94" title="焦比 – Chinees" lang="zh" hreflang="zh" data-title="焦比" data-language-autonym="中文" data-language-local-name="Chinees" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q862169#sitelinks-wikipedia" title="Taalkoppelingen bewerken" class="wbc-editpage">Koppelingen bewerken</a></span></div> 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class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">naar zijbalk verplaatsen</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">verbergen</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Uit Wikipedia, de vrije encyclopedie</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Doorverwezen vanaf <a href="/w/index.php?title=F-getal&redirect=no" class="mw-redirect" title="F-getal">F-getal</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nl" dir="ltr"><figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Bestand:Aperture_diagram.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Aperture_diagram.svg/300px-Aperture_diagram.svg.png" decoding="async" width="300" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Aperture_diagram.svg/450px-Aperture_diagram.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/Aperture_diagram.svg/600px-Aperture_diagram.svg.png 2x" data-file-width="512" data-file-height="204" /></a><figcaption>Grafisch weergegeven</figcaption></figure> <p>Het <b>diafragmagetal</b> of de <i>diafragmawaarde</i> (ook wel <i>F-getal</i> of <i>openingsverhouding</i> genoemd) is een begrip uit de <a href="/wiki/Geometrische_optica" title="Geometrische optica">optica</a> dat onder andere in de <a href="/wiki/Fotografie" title="Fotografie">fotografie</a> en <a href="/wiki/Astronomie" title="Astronomie">astronomie</a> gebruikt wordt. In de (vooral fotografische) praktijk worden de begrippen <i>diafragmagetal</i> en <i>apertuur</i> vaak door elkaar gebruikt. </p><p>Het diafragmagetal van een <a href="/wiki/Lens_(optica)" title="Lens (optica)">lens</a> of lenzenstelsel is gelijk aan de <a href="/wiki/Brandpuntsafstand" title="Brandpuntsafstand">brandpuntsafstand</a> (ƒ) gedeeld door de <a href="/wiki/Apertuur" title="Apertuur">apertuur</a> (<i>D</i>), de <a href="/wiki/Diameter" title="Diameter">diameter</a> van de intreepupil: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\mbox{diafragmagetal}}={\frac {f}{D}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>diafragmagetal</mtext> </mstyle> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>f</mi> <mi>D</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\mbox{diafragmagetal}}={\frac {f}{D}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7d90cf7ebd4aa1e5ff906d0f5a638dc45ac19656" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:20.916ex; height:5.343ex;" alt="{\displaystyle {\mbox{diafragmagetal}}={\frac {f}{D}}}"></span></dd></dl> <p>Daar het diafragmagetal de verhouding tussen twee lengtes is, is het <a href="/wiki/Dimensieloos_getal" class="mw-redirect" title="Dimensieloos getal">dimensieloos</a>. Zowel bij een lensopeningdiameter van 17 mm met een lens met 34 mm brandpuntsafstand als bij een lensopeningdiameter van 25 mm met een lens met 50 mm brandpuntsafstand is het diafragmagetal 2. Dit wordt genoteerd als ƒ/2 of ƒ2 of 1:2, de notatie in de praktijk geeft een groter getal bij een kleinere opening. Als "ƒ/2" als deling wordt gezien met ƒ de brandpuntsafstand dan is de uitkomst de lensopeningdiameter. </p><p>Onder de <a href="/wiki/Intree-_en_uittreepupil" title="Intree- en uittreepupil">intreepupil</a> wordt verstaan het door de vóór het diafragma gelegen lens- of spiegelcomponenten gevormde beeld van het diafragma. Zie <i><a href="/wiki/Dikke_lens" title="Dikke lens">Dikke lens</a></i> voor meer informatie. In de praktijk wordt deze diameter gewoonlijk de „diameter van de diafragma-opening” genoemd. </p><p>Het diafragmagetal heeft niet alleen invloed op het lichtverzamelend vermogen van een lens of lenzenstelsel, maar ook op de <a href="/wiki/Scherptediepte" title="Scherptediepte">scherptediepte</a> en de <a href="/wiki/Bokeh" title="Bokeh">bokeh</a>. </p> <table class="wikitable"> <tbody><tr> <th colspan="14">Gebruikelijke diafragmagetallen </th></tr> <tr> <td>Notatie</td> <td>ƒ/1</td> <td>ƒ/1,4</td> <td>ƒ/2</td> <td>ƒ/2,8</td> <td>ƒ/4</td> <td>ƒ/5,6</td> <td>ƒ/8</td> <td>ƒ/11</td> <td>ƒ/16</td> <td>ƒ/22</td> <td>ƒ/32</td> <td>ƒ/45</td> <td>ƒ/64 </td></tr> <tr style="text-align:right"> <td>Diafragmagetal zelf</td> <td>1</td> <td>1,4</td> <td>2</td> <td>2,8</td> <td>4</td> <td>5,6</td> <td>8</td> <td>11</td> <td>16</td> <td>22</td> <td>32</td> <td>45</td> <td>64 </td></tr></tbody></table> <p>Het laagste getal komt overeen met de grootst mogelijke diameter van de intreepupil; dit wordt de <a href="/wiki/Lichtsterkte_(fotografie)" title="Lichtsterkte (fotografie)">lichtsterkte</a> van het objectief genoemd. </p><p>Een objectief met een diafragma van ƒ/1,4 heeft de dubbele lichtsterkte van een objectief waarbij de kleinste waarde ƒ/2 is. De constructie van lichtsterke objectieven vraagt niet alleen meer materiaal, maar het is ook ingewikkelder, om <a href="/wiki/Aberratie_(optica)" title="Aberratie (optica)">afbeeldingsfouten</a> te beperken. Daarom zijn lichtsterke objectieven in het algemeen veel duurder dan minder lichtsterke. Voor extreme brandpuntsafstanden geldt dit nog meer; extreem lichtsterke objectieven zijn meestal <a href="/wiki/Standaardobjectief" title="Standaardobjectief">standaardobjectieven</a> of korte teleobjectieven. </p> <div class="mw-heading mw-heading2"><h2 id="In_de_praktijk">In de praktijk</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Diafragmagetal&veaction=edit&section=1" title="Bewerk dit kopje: In de praktijk" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Diafragmagetal&action=edit&section=1" title="De broncode bewerken van de sectie: In de praktijk"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Op een <a href="/wiki/Fotocamera" title="Fotocamera">fototoestel</a> of <a href="/wiki/Filmcamera" title="Filmcamera">filmcamera</a> kan de <a href="/wiki/Belichting" title="Belichting">belichting</a> geregeld worden door het <a href="/wiki/Diafragma_(optica)" title="Diafragma (optica)">diafragma</a> meer of minder te openen. Het objectief heeft een maximale opening (kleinste diafragmagetal); vervolgens is elke stap groter een kleinere diafragma-opening. Dit wordt bijvoorbeeld gebruikt als er te veel licht is (diafragma kleiner) of als er te weinig licht is (diafragma groter). De maximale opening hangt af van het soort objectief. Objectieven met een vaste brandpuntsafstand zijn eenvoudiger te maken dan <a href="/wiki/Zoomobjectief" title="Zoomobjectief">zoomobjectieven</a>; de maximale opening van een zoomobjectief is meestal kleiner dan die van een vast objectief. </p><p>Aangezien het diafragmagetal een verhouding is, wordt de grootst mogelijke waarde mede bepaald door de brandpuntsafstand: een langer teleobjectief moet een grotere openingsdiameter hebben voor hetzelfde diafragmagetal. </p> <div class="mw-heading mw-heading3"><h3 id="Diafragma_standen">Diafragma standen</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Diafragmagetal&veaction=edit&section=2" title="Bewerk dit kopje: Diafragma standen" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Diafragmagetal&action=edit&section=2" title="De broncode bewerken van de sectie: Diafragma standen"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>De stappen tussen deze waarden worden ook wel <i>stops</i> genoemd (in feite een <a href="/wiki/Anglicisme" title="Anglicisme">anglicisme</a> voor ‘klikken’ of ‘standen’). Iedere stop komt overeen met een factor 2 in de <i>oppervlakte</i> van de diafragmaopening, en dus met de helft of het dubbele van de doorgelaten hoeveelheid licht. Om de oppervlakte van een <a href="/wiki/Cirkel" title="Cirkel">cirkel</a> te halveren, moet men de diameter met een factor <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \scriptstyle {\sqrt {2}}\ \approx \ 1,4}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mstyle displaystyle="false" scriptlevel="1"> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>2</mn> </msqrt> </mrow> <mtext> </mtext> <mo>≈</mo> <mtext> </mtext> <mn>1</mn> <mo>,</mo> <mn>4</mn> </mstyle> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \scriptstyle {\sqrt {2}}\ \approx \ 1,4}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6302f3f18e844c697d5dbb80f28d16eda200bad9" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:6.732ex; height:2.176ex;" alt="{\displaystyle \scriptstyle {\sqrt {2}}\ \approx \ 1,4}"></span> verkleinen. Dit levert een reeks diameters, als een fractie van de brandpuntsafstand ƒ, van ƒ/2; ƒ/2,8; ƒ/4; ƒ/5,6; ƒ/8; ƒ/11; ƒ/16; ƒ/22; ƒ/32 enz. De noemers van deze breuken zijn de bijbehorende diafragmagetallen. Dit verklaart de herkomst van de reeks diafragmagetallen van 2; 2,8; 4; 5,6 enz.: het is de afronding van een <a href="/wiki/Meetkundige_rij" title="Meetkundige rij">meetkundige rij</a> met reden <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \scriptstyle {\sqrt {2}}\ \approx \ 1,4}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mstyle displaystyle="false" scriptlevel="1"> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>2</mn> </msqrt> </mrow> <mtext> </mtext> <mo>≈</mo> <mtext> </mtext> <mn>1</mn> <mo>,</mo> <mn>4</mn> </mstyle> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \scriptstyle {\sqrt {2}}\ \approx \ 1,4}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6302f3f18e844c697d5dbb80f28d16eda200bad9" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:6.732ex; height:2.176ex;" alt="{\displaystyle \scriptstyle {\sqrt {2}}\ \approx \ 1,4}"></span>. Gebruikelijk voor een fotografisch objectief van een fototoestel is een diafragmareeks tussen ƒ/1,4 en ƒ/32. </p><p>Bij veel objectieven is het ook mogelijk tussenliggende waarden in te stellen, zodat een reeks ontstaat: ƒ/1,2; ƒ/1,4; ƒ/1,6; ƒ/1,8; ƒ/2,0; ƒ/2,2; ƒ/2,5; ƒ/2,8; ƒ/3,2; ƒ/3,5; ƒ/4,0; ƒ/4,5; ƒ/5,0; ƒ/5,6; ƒ/6,3; ƒ/7,1; ƒ/8,0; ƒ/9,0; ƒ/10; ƒ/11; ƒ/13; ƒ/14; ƒ/16; ƒ/18; ƒ/20; ƒ/22; ƒ/25; ƒ/29; ƒ/32 (en kleinere diameters, dus grotere diafragmagetallen). Bij deze reeks is de verhouding tussen twee opeenvolgende waarden ongeveer <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \scriptstyle {\sqrt[{3}]{\sqrt {2}}}\ =\ {\sqrt[{6}]{2}}\ \approx \ 1{,}12}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mstyle displaystyle="false" scriptlevel="1"> <mrow class="MJX-TeXAtom-ORD"> <mroot> <msqrt> <mn>2</mn> </msqrt> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </mroot> </mrow> <mtext> </mtext> <mo>=</mo> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mroot> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>6</mn> </mrow> </mroot> </mrow> <mtext> </mtext> <mo>≈</mo> <mtext> </mtext> <mn>1</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>,</mo> </mrow> <mn>12</mn> </mstyle> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \scriptstyle {\sqrt[{3}]{\sqrt {2}}}\ =\ {\sqrt[{6}]{2}}\ \approx \ 1{,}12}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/89a69b2f10a36c48b26379b2bce87df50e10e2aa" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.171ex; width:13.828ex; height:3.509ex;" alt="{\displaystyle \scriptstyle {\sqrt[{3}]{\sqrt {2}}}\ =\ {\sqrt[{6}]{2}}\ \approx \ 1{,}12}"></span>. </p> <div class="mw-heading mw-heading2"><h2 id="Zie_ook">Zie ook</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Diafragmagetal&veaction=edit&section=3" title="Bewerk dit kopje: Zie ook" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Diafragmagetal&action=edit&section=3" title="De broncode bewerken van de sectie: Zie ook"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Lens_(optica)" title="Lens (optica)">Lens (optica)</a></li> <li><a href="/wiki/Dikke_lens" title="Dikke lens">Dikke lens</a></li> <li><a href="/wiki/Objectief_(optica)" title="Objectief (optica)">Objectief (optica)</a></li> <li><a href="/wiki/Objectief_(fotografie)" title="Objectief (fotografie)">Objectief (fotografie)</a></li> <li><a href="/wiki/Scherptediepte" title="Scherptediepte">Scherptediepte</a></li></ul> <style data-mw-deduplicate="TemplateStyles:r67837862">.mw-parser-output .navigatie{position:relative;clear:both;overflow:auto;margin:1em auto -0.5em;padding:2px;background-color:var(--background-color-neutral-subtle,#f8f9fa);border:1px solid var(--border-color-base,#a2a9b1);text-align:center;font-size:87%}.mw-parser-output .navigatie-bewerken{margin-left:0.5em}.mw-parser-output .navigatie-bewerken .mw-ui-icon::before{background-size:0.9em}.mw-parser-output .navigatie-afb-links,.mw-parser-output .navigatie-afb-rechts{position:absolute}.mw-parser-output .navigatie-afb-rechts{right:2px}.mw-parser-output .navigatie-afb-groot{float:right;padding-left:0.5em}.mw-parser-output .navigatie-titel{background-color:#ddeef8;padding:2px 5.5em;font-weight:bold}.mw-parser-output .navigatie-inhoud{padding:0.5em}.mw-parser-output .navigatie-inhoud p:first-child{margin:0}.mw-parser-output .navigatie div[style*="background-color"],.mw-parser-output .navigatie div[style*="background"]{color:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .navigatie-titel{background-color:var(--background-color-interactive,#eaecf0)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navigatie-titel{background-color:var(--background-color-interactive,#eaecf0)!important}}</style> <div class="navigatie mw-collapsible mw-collapsed" role="navigation" aria-labelledby="Geometrische_optica" data-expandtext="Uitklappen" data-collapsetext="Inklappen"> <div class="navigatie-afb-links noviewer"><div class="navigatie-bewerken show-autoconfirmed nomobile"><span class="nowrap skin-invert-image"><span typeof="mw:File"><a href="/wiki/Sjabloon:Navigatie_geometrische_optica" title="Sjabloon:Navigatie geometrische optica"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/OOjs_UI_icon_article-ltr.svg/16px-OOjs_UI_icon_article-ltr.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/OOjs_UI_icon_article-ltr.svg/24px-OOjs_UI_icon_article-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c4/OOjs_UI_icon_article-ltr.svg/32px-OOjs_UI_icon_article-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span> · <span class="ui-state-disabled" typeof="mw:File"><span title="Overleg sjabloon (de pagina bestaat niet)"><img alt="Overleg sjabloon (de pagina bestaat niet)" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBubbles-ltr.svg/16px-OOjs_UI_icon_speechBubbles-ltr.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBubbles-ltr.svg/24px-OOjs_UI_icon_speechBubbles-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBubbles-ltr.svg/32px-OOjs_UI_icon_speechBubbles-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></span></span> · <span typeof="mw:File"><a href="//nl.wikipedia.org/w/index.php?title=Sjabloon:Navigatie_geometrische_optica&action=edit" title="Sjabloon bewerken"><img alt="Sjabloon bewerken" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/16px-OOjs_UI_icon_edit-ltr.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/24px-OOjs_UI_icon_edit-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/32px-OOjs_UI_icon_edit-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></div></div> <div id="Geometrische_optica" class="navigatie-titel"><a href="/wiki/Geometrische_optica" title="Geometrische optica">Geometrische optica</a></div> <div class="navigatie-inhoud mw-collapsible-content"> <style data-mw-deduplicate="TemplateStyles:r67785531">.mw-parser-output .navigatie-tabel{margin:0 auto 0 auto;text-align:left}.mw-parser-output .navigatie-tabel .links{text-align:right}.mw-parser-output .navigatie-tabel .rechts{padding-left:0.5em}@media screen and (max-width:640px){.mw-parser-output .navigatie-tabel tr{display:grid;grid-template-columns:1fr;width:100%;margin-bottom:0.5em}.mw-parser-output .navigatie-tabel tr:last-of-type{margin-bottom:0}.mw-parser-output .navigatie-tabel .links{text-align:unset}.mw-parser-output .navigatie-tabel .rechts{padding:unset}}</style><table class="navigatie-tabel vatop" cellpadding="0" cellspacing="0" style=""><tbody><tr><td class="links" style=""><b>Basisbegrippen:</b></td><td class="rechts"><a href="/wiki/Apertuur" title="Apertuur">Apertuur</a> · <a href="/wiki/Beeld_(optica)" title="Beeld (optica)">Beeld</a> · <a href="/wiki/Beeldvlak_(optica)" title="Beeldvlak (optica)">Beeldvlak</a> · <a href="/wiki/Brandpunt_(optica)" title="Brandpunt (optica)">Brandpunt</a> · <a href="/wiki/Brandpuntsafstand" title="Brandpuntsafstand">Brandpuntsafstand</a> · <a href="/wiki/Brekingsindex" title="Brekingsindex">Brekingsindex</a> · <a href="/wiki/Catadioptrisch_systeem" title="Catadioptrisch systeem">Catadioptrisch systeem</a> · <a href="/wiki/Concaaf" title="Concaaf">Concaaf</a> · <a href="/wiki/Contrast" title="Contrast">Contrast</a> · <a href="/wiki/Convergentie_en_divergentie" title="Convergentie en divergentie">Convergentie en divergentie</a> · <a href="/wiki/Convex" title="Convex">Convex</a> · <a class="mw-selflink selflink">Diafragmagetal</a> · <a href="/wiki/Dioptrie" title="Dioptrie">Dioptrie</a> · <a href="/wiki/Fresnelvergelijkingen" title="Fresnelvergelijkingen">Fresnelvergelijkingen</a> · <a href="/wiki/Getal_van_Abbe" title="Getal van Abbe">Getal van Abbe</a> · <a href="/wiki/Glans" title="Glans">Glans</a> · <a href="/wiki/Hoekvergroting" title="Hoekvergroting">Hoekvergroting</a> · <a href="/wiki/Hoofdvlak" title="Hoofdvlak">Hoofdvlak</a> · <a href="/wiki/Intree-_en_uittreepupil" title="Intree- en uittreepupil">Intree- en uittreepupil</a> · <a href="/wiki/Lenzenformule" title="Lenzenformule">Lenzenformule</a> · <a href="/wiki/Lichtbreking" title="Lichtbreking">Lichtbreking</a> · <a href="/wiki/Openingshoek" title="Openingshoek">Openingshoek</a> · <a href="/wiki/Optische_as_(optica)" title="Optische as (optica)">Optische as</a> · <a href="/wiki/Parallax_(hoofdbetekenis)" class="mw-redirect" title="Parallax (hoofdbetekenis)">Parallax</a> · <a href="/wiki/Paraxiale_benadering" title="Paraxiale benadering">Paraxiale benadering</a> · <a href="/wiki/Reflectie_(straling)" title="Reflectie (straling)">Reflectie</a> · <a href="/wiki/Scheimpflug-principe" title="Scheimpflug-principe">Scheimpflug-principe</a> · <a href="/wiki/Spiegelbeeld_(reflectie)" title="Spiegelbeeld (reflectie)">Spiegelbeeld</a> · <a href="/wiki/Strehlverhouding" title="Strehlverhouding">Strehlverhouding</a> · <a href="/wiki/Totale_interne_reflectie" title="Totale interne reflectie">Totale interne reflectie</a> · <a href="/wiki/Virtueel_beeld" title="Virtueel beeld">Virtueel beeld</a> · <a href="/wiki/Wet_van_Snellius" title="Wet van Snellius">Wet van Snellius</a></td></tr><tr><td class="links"><b>Optische component:</b></td><td class="rechts"><a href="/wiki/Dunne_lens" title="Dunne lens">Dunne lens</a> · <a href="/wiki/Dikke_lens" title="Dikke lens">Dikke lens</a> · <a href="/wiki/Diafragma_(optica)" title="Diafragma (optica)">Diafragma</a> · <a href="/wiki/Flintglas" title="Flintglas">Flintglas</a> · <a href="/wiki/Fresnellens" title="Fresnellens">Fresnellens</a> · <a href="/wiki/Kroonglas_(optisch_glas)" title="Kroonglas (optisch glas)">Kroonglas</a> · <a href="/wiki/Lens_(optica)" title="Lens (optica)">Lens</a> · <a href="/wiki/Microlens_(optica)" title="Microlens (optica)">Microlens</a> · <a href="/wiki/Retroreflector" title="Retroreflector">Retroreflector</a> · <a href="/wiki/Spiegel_(optica)" title="Spiegel (optica)">Spiegel</a> · <a href="/wiki/Stralingsdeler" title="Stralingsdeler">Stralingsdeler</a></td></tr><tr><td class="links"><b>Asferische component:</b></td><td class="rechts"><a href="/wiki/Asferische_optiek" title="Asferische optiek">Asferische optiek</a> · <a href="/wiki/Cilindrische_lens" title="Cilindrische lens">Cilindrische lens</a> · <a href="/wiki/Lachspiegel" title="Lachspiegel">Lachspiegel</a> · <a href="/wiki/Paraboolreflector" title="Paraboolreflector">Paraboolreflector</a> · <a href="/wiki/Spiegeltelescoop#Schmidtcorrector" title="Spiegeltelescoop">Schmidtcorrector</a> · <a href="/wiki/Torische_lens" title="Torische lens">Torische lens</a></td></tr><tr><td class="links"><b>Lenzenstelsel:</b></td><td class="rechts"><a href="/wiki/Condensor_(optica)" title="Condensor (optica)">Condensor</a> · <a href="/wiki/Lenzenstelsel" title="Lenzenstelsel">Lenzenstelsel</a> · <a href="/wiki/Objectief_(optica)" title="Objectief (optica)">Objectief (optica)</a> · <a href="/wiki/Oculair" title="Oculair">Oculair</a> · <a href="/wiki/Retrofocus-_en_teleconstructie" title="Retrofocus- en teleconstructie">Retrofocus- en teleconstructie</a></td></tr><tr><td class="links"><b>Afbeeldingsfout:</b></td><td class="rechts"><a href="/wiki/Aberratie_(optica)" title="Aberratie (optica)">Afbeeldingsfouten</a> · <a href="/wiki/Astigmatisme_(optica)" title="Astigmatisme (optica)">Astigmatisme</a> · <a href="/wiki/Beeldveldwelving" title="Beeldveldwelving">Beeldveldwelving</a> · <a href="/wiki/Chromatische_aberratie" title="Chromatische aberratie">Chromatische aberratie</a> · <a href="/wiki/Coma_(optica)" title="Coma (optica)">Coma</a> · <a href="/wiki/Sferische_aberratie" title="Sferische aberratie">Sferische aberratie</a> · <a href="/wiki/Vertekening" title="Vertekening">Vertekening</a></td></tr><tr><td class="links"><span class="nowrap"><b>Toepassing (fotografie):</b></span></td><td class="rechts"><a href="/wiki/Fisheye-objectief" title="Fisheye-objectief">Fisheye-objectief</a> · <a href="/wiki/Fotografie" title="Fotografie">Fotografie</a> · <a href="/wiki/Groothoekobjectief" title="Groothoekobjectief">Groothoekobjectief</a> · <a href="/wiki/Macro-objectief" title="Macro-objectief">Macro-objectief</a> · <a href="/wiki/Pentaprisma" title="Pentaprisma">Pentaprisma</a> · <a href="/wiki/Standaardobjectief" title="Standaardobjectief">Standaardobjectief</a> · <a href="/wiki/Teleconverter" title="Teleconverter">Teleconverter</a> · <a href="/wiki/Teleobjectief" title="Teleobjectief">Teleobjectief</a> · <a href="/wiki/Tussenring" title="Tussenring">Tussenring</a> · <a href="/wiki/Vergrotingsapparaat" title="Vergrotingsapparaat">Vergrotingsapparaat</a> · <a href="/wiki/Vignettering" title="Vignettering">Vignettering</a> · <a href="/wiki/Voorzetlens" title="Voorzetlens">Voorzetlens</a> · <a href="/wiki/Zoomobjectief" title="Zoomobjectief">Zoomobjectief</a></td></tr><tr><td class="links"><b>(bril e.d.):</b></td><td class="rechts"><a href="/wiki/Antireflectiecoating" title="Antireflectiecoating">Antireflectiecoating</a> · <a href="/wiki/Bifocaal_brillenglas" title="Bifocaal brillenglas">Bifocaal brillenglas</a> · <a href="/wiki/Beeldschermbril" title="Beeldschermbril">Beeldschermbril</a> · <a href="/wiki/Bril_(hoofdbetekenis)" class="mw-redirect" title="Bril (hoofdbetekenis)">Bril</a> · <a href="/wiki/Contactlens" title="Contactlens">Contactlens</a> · <a href="/wiki/Intraoculaire_lens" title="Intraoculaire lens">Intraoculaire lens</a> · <a href="/wiki/Multifocaal_brillenglas" title="Multifocaal brillenglas">Multifocaal brillenglas</a> · <a href="/wiki/Nabijheidspunt" title="Nabijheidspunt">Nabijheidspunt</a> · <a href="/wiki/Oogmeting" title="Oogmeting">Oogmeting</a> · <a href="/wiki/Refractor_(optometrie)" title="Refractor (optometrie)">Refractor (optometrie)</a> · <a href="/wiki/Vertepunt" title="Vertepunt">Vertepunt</a></td></tr><tr><td class="links"><b>(microscoop):</b></td><td class="rechts"><a href="/wiki/Microscoop" title="Microscoop">Microscoop</a> · <a href="/wiki/Numerieke_apertuur" title="Numerieke apertuur">Numerieke apertuur</a> · <a href="/wiki/Olie-immersie" title="Olie-immersie">Olie-immersie</a> · <a href="/wiki/Stereomicroscoop" title="Stereomicroscoop">Stereomicroscoop</a></td></tr><tr><td class="links"><b>(projector):</b></td><td class="rechts"><a href="/wiki/Eidophor" title="Eidophor">Eidophor</a> · <a href="/wiki/Episcoop" title="Episcoop">Episcoop</a> · <a href="/wiki/Diaprojector" title="Diaprojector">Diaprojector</a> · <a href="/wiki/Filmprojector" title="Filmprojector">Filmprojector</a> · <a href="/wiki/Overheadprojector" title="Overheadprojector">Overheadprojector</a> · <a href="/wiki/Toverlantaarn" title="Toverlantaarn">Toverlantaarn</a> · <a href="/wiki/Videoprojector" title="Videoprojector">Videoprojector</a></td></tr><tr><td class="links"><span class="nowrap"><b>(telescoop e.d.):</b></span></td><td class="rechts"><a href="/wiki/Actieve_optiek" title="Actieve optiek">Actieve optiek</a> · <a href="/wiki/Astrograaf" title="Astrograaf">Astrograaf</a> · <a href="/wiki/Dobsontelescoop" title="Dobsontelescoop">Dobsontelescoop</a> · <a href="/wiki/Hollandse_kijker" title="Hollandse kijker">Hollandse kijker</a> · <a href="/wiki/Montering_(telescoop)" title="Montering (telescoop)">Montering</a> · <a href="/wiki/Newtontelescoop" title="Newtontelescoop">Newtontelescoop</a> · <a href="/wiki/Nulcorrector" title="Nulcorrector">Nulcorrector</a> · <a href="/wiki/Refractor_(telescoop)" title="Refractor (telescoop)">Refractor (telescoop)</a> · <a href="/wiki/Spiegeltelescoop" title="Spiegeltelescoop">Spiegeltelescoop (alle types)</a> · <a href="/wiki/Telescoop_(optica)" title="Telescoop (optica)">Telescoop</a> · <a href="/wiki/Verrekijker_(hoofdbetekenis)" class="mw-redirect" title="Verrekijker (hoofdbetekenis)">Verrekijker</a> · <a href="/wiki/Volgster" title="Volgster">Volgster</a></td></tr><tr><td class="links"><b>Algemene toepassing:</b></td><td class="rechts"><a href="/wiki/Achteruitkijkspiegel" title="Achteruitkijkspiegel">Achteruitkijkspiegel</a> · <a href="/wiki/Adaptieve_optiek" title="Adaptieve optiek">Adaptieve optiek</a> · <a href="/wiki/Barlowlens" title="Barlowlens">Barlowlens</a> · <a href="/wiki/Kaleidoscoop" class="mw-redirect" title="Kaleidoscoop">Kaleidoscoop</a> · <a href="/wiki/Eenrichtingsspiegel" 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