{"id":1209,"date":"2021-05-24T14:00:53","date_gmt":"2021-05-24T12:00:53","guid":{"rendered":"http:\/\/localhost:8881\/?p=1209"},"modified":"2026-05-14T10:37:21","modified_gmt":"2026-05-14T08:37:21","slug":"aperture","status":"publish","type":"post","link":"https:\/\/fotografeer.nl\/?p=1209","title":{"rendered":"Lens &#8211; Aperture"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Amount of Light<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"506\" src=\"http:\/\/localhost:8881\/wp-content\/uploads\/2021\/05\/diafragmas-1-1024x506.png\" alt=\"\" class=\"wp-image-1257\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragmas-1-1024x506.png 1024w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragmas-1-300x148.png 300w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragmas-1-768x380.png 768w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragmas-1-1536x759.png 1536w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragmas-1-2048x1012.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/en.wikipedia.org\/wiki\/Diaphragm_(optics)\" target=\"_blank\" rel=\"noreferrer noopener\">diaphragm<\/a>   inside a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Camera_lens\" target=\"_blank\" rel=\"noreferrer noopener\">lens<\/a> regulates the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a> and thereby the amount of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Light\" target=\"_blank\" rel=\"noreferrer noopener\">light<\/a> entering the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Camera\" target=\"_blank\" rel=\"noreferrer noopener\">camera<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Diafragma\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/H_plGEi6KMM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\"><em>Currently there is only a version in Dutch<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The light sensitive surface like an <a href=\"https:\/\/en.wikipedia.org\/wiki\/Image_sensor\" target=\"_blank\" rel=\"noreferrer noopener\">image sensor<\/a> or <a href=\"https:\/\/en.wikipedia.org\/wiki\/Photographic_film\" target=\"_blank\" rel=\"noreferrer noopener\">film<\/a> works optimal when it receives a measured amount of light. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Light_meter\" target=\"_blank\" rel=\"noreferrer noopener\">Light meters<\/a> in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Camera\" target=\"_blank\" rel=\"noreferrer noopener\">camera<\/a>s are usually calibrated to <a href=\"https:\/\/en.wikipedia.org\/wiki\/Middle_gray\" target=\"_blank\" rel=\"noreferrer noopener\">middle gray<\/a>. The <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a>, <a href=\"https:\/\/en.wikipedia.org\/wiki\/Shutter_speed\" target=\"_blank\" rel=\"noreferrer noopener\">exposure time<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Film_speed\" target=\"_blank\" rel=\"noreferrer noopener\">sensitivity<\/a> together determine the amount of light needed to achieve optimal exposure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Human_eye\" target=\"_blank\" rel=\"noreferrer noopener\">human eye<\/a> the amount of light reaching the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Retina\" target=\"_blank\" rel=\"noreferrer noopener\">retnia<\/a> is influenced by the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Iris_(anatomy)\" target=\"_blank\" rel=\"noreferrer noopener\">iris<\/a> and the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pupil\" target=\"_blank\" rel=\"noreferrer noopener\">pupil<\/a> size. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Iris-Pupil-1-1024x768.png\" alt=\"Iris - Pupil\" class=\"wp-image-1972\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Iris-Pupil-1-1024x768.png 1024w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Iris-Pupil-1-300x225.png 300w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Iris-Pupil-1-768x576.png 768w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Iris-Pupil-1-1536x1152.png 1536w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Iris-Pupil-1.png 1752w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Zie: <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:My_eye.jpg\">https:\/\/commons.wikimedia.org\/wiki\/File:My_eye.jpg<\/a><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Likewise, in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Photography\" target=\"_blank\" rel=\"noreferrer noopener\">photography<\/a>, the amount of light reaching the light sensitive area is influenced by sliding diaphragm blades that regulate the size of the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Think of the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Iris_(anatomy)\" target=\"_blank\" rel=\"noreferrer noopener\">iris<\/a> as being the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Diaphragm_(optics)\" target=\"_blank\" rel=\"noreferrer noopener\">diaphragm<\/a> and the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pupil\" target=\"_blank\" rel=\"noreferrer noopener\">pupil<\/a> as being the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a>. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"798\" height=\"1024\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/apertuur-2-798x1024.png\" alt=\"Diaphragm blades - Aperture\" class=\"wp-image-1977\" style=\"width:444px\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/apertuur-2-798x1024.png 798w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/apertuur-2-234x300.png 234w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/apertuur-2-768x985.png 768w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/apertuur-2.png 926w\" sizes=\"auto, (max-width: 798px) 100vw, 798px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In older lenses the diaphragm blades are controlled manually by rotating the aperture ring.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"660\" height=\"1020\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragma-ring-2.png\" alt=\"\" class=\"wp-image-1987\" style=\"width:444px\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragma-ring-2.png 660w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragma-ring-2-194x300.png 194w\" sizes=\"auto, (max-width: 660px) 100vw, 660px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In modern lenses the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a> is controlled manually by a command wheel (control dial) or chosen automatically by the camera.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"729\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Instellwiel-2-1024x729.png\" alt=\"\" class=\"wp-image-1994\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Instellwiel-2-1024x729.png 1024w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Instellwiel-2-300x214.png 300w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Instellwiel-2-768x547.png 768w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/Instellwiel-2.png 1488w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The <a href=\"https:\/\/en.wikipedia.org\/wiki\/F-number\" target=\"_blank\">f-number<\/a> (<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n        <mrow>\n            <mi>N<\/mi>\n        <\/mrow>\n        <mn><\/mn>\n    <\/math>) is determined from the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Focal_length\" target=\"_blank\">focal length<\/a> (<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n        <mrow>\n            <mi>f<\/mi>\n        <\/mrow>\n        <mn><\/mn>\n    <\/math>) and the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\">aperture<\/a> (<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n        <mrow>\n            <mi>D<\/mi>\n        <\/mrow>\n        <mn><\/mn>\n    <\/math>):<\/p>\n<p class=\"\">\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" style=\"font-size: larger;\">\n        <mrow>\n            <msup>\n                <mi>N<\/mi>\n                <mn><\/mn>\n            <\/msup>\n            <mo>=<\/mo>\n            <mo><\/mo>\n            <!-- mfenced -->\n                <mfrac>\n                    <mrow>\n                        <mi>f<\/mi>\n                        <mn><\/mn>\n                    <\/mrow>\n                    <mrow>\n                        <mi>D<\/mi>\n                        <mn><\/mn>\n                    <\/mrow>\n                <\/mfrac>\n            <!-- \/mfenced -->\n        <\/mrow>\n    <\/math>\n<\/p>\n\n\n\n<table id=\"diafragma\" border=\"3px\" style=\"border-collapse: collapse;\">\n        <thead>\n            <tr>\n                <th colspan=\"13\"><i>Common <a href=\"https:\/\/en.wikipedia.org\/wiki\/F-number\" target=\"_blank\">f-number<\/a>s<\/i><\/th>\n            <\/tr>\n        <\/thead>\n        <tbody>\n            <tr>\n                <td>Notation<\/td>\n                <td style=\"width:80px;\">\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/1\n                <\/td>\n                <td style=\"width:80px;\">\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/1,4\n                <\/td>\n                <td style=\"width:80px;\">\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/2\n                <\/td>\n                <td style=\"width:80px;\">\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/2,8\n                <\/td>\n                <td style=\"width:80px;\">\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/4\n                <\/td>\n                <td style=\"width:80px;\">\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/5,6\n                <\/td>\n            <\/tr>\n            <tr>\n                <td>f-number<\/td>\n                <td><b>1<\/b><\/td>\n                <td><b>1,4<\/b><\/td>\n                <td><b>2<\/b><\/td>\n                <td><b>2,8<\/b><\/td>\n                <td><b>4<\/b><\/td>\n                <td><b>5,6<\/b><\/td>\n            <\/tr>\n            <tr>\n                <td>Example<\/td>\n                <td><\/td>\n                <td><\/td>\n                <td>\n<figure>\n  <img decoding=\"async\" width=\"100%\" alt=\"f2.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f2.jpg\" \/>\n  <figcaption<span><i>f\/<\/i>2<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n                <td>\n<figure>\n  <img decoding=\"async\" width=\"100%\" alt=\"f28.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f2.8.jpg\" \/>\n  <figcaption><span><i>f\/<\/i>2,8<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n                <td>\n<figure>\n      <img decoding=\"async\" width=\"100%\" alt=\"f4.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f4.jpg\" \/>\n  <figcaption><span><i>f\/<\/i>4<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n                <td>\n<figure>\n  <img decoding=\"async\" width=\"100%\" alt=\"f56.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f5.6.jpg\" \/>\n  <figcaption><span><i>f\/<\/i>5,6<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n            <\/tr>\n            <tr>\n                <td>Notation<\/td>\n                <td>\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/8\n                <\/td>\n                <td>\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/11\n                <\/td>\n                <td>\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/16\n                <\/td>\n                <td>\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/22\n                <\/td>\n                <td>\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/32\n                <\/td>\n                <td>\n                    <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                        <mrow>\n                            <mi>f<\/mi>\n                        <\/mrow>\n                        <mn><\/mn>\n                    <\/math>\/64\n                <\/td>\n            <\/tr>\n            <tr>\n                <td>f-number<\/td>\n                <td><b>8<\/b><\/td>\n                <td><b>11<\/b><\/td>\n                <td><b>16<\/b><\/td>\n                <td><b>22<\/b><\/td>\n                <td><b>32<\/b><\/td>\n                <td><b>64<\/b><\/td>\n            <\/tr>\n                        <tr>\n                <td>Example<\/td>\n                <td>\n<figure>\n  <img decoding=\"async\" width=\"100%\" alt=\"f8.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f8.jpg\" \/>\n  <figcaption><span><i>f\/<\/i>8<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n                <td>\n<figure>\n\t<img decoding=\"async\" width=\"100%\" alt=\"f11.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f11.jpg\" \/>\n  <figcaption><span><i>f\/<\/i>11<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n                <td>\n<figure>\n  <img decoding=\"async\" width=\"100%\" alt=\"f16.jpg\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/f16.jpg\" \/>\n  <figcaption><span><i>f\/<\/i>16<\/span><\/figcaption>\n<\/figure>\n                <\/td>\n                <td><\/td>\n                <td><\/td>\n                <td><\/td>\n            <\/tr>\n        <\/tbody><\/table>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/en.wikipedia.org\/wiki\/F-number\" target=\"_blank\" rel=\"noreferrer noopener\">f-number<\/a> is found on the lens aperture ring or the LCD screen of your camera. The larger the number, the smaller the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"527\" height=\"674\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragma-ring-3.jpg\" alt=\"\" class=\"wp-image-1997\" style=\"width:444px\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragma-ring-3.jpg 527w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/diafragma-ring-3-235x300.jpg 235w\" sizes=\"auto, (max-width: 527px) 100vw, 527px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The lowest available <a href=\"https:\/\/en.wikipedia.org\/wiki\/F-number\" target=\"_blank\" rel=\"noreferrer noopener\">f-number<\/a> for the largest <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aperture\" target=\"_blank\" rel=\"noreferrer noopener\">aperture<\/a> is called the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lens_speed\" target=\"_blank\" rel=\"noreferrer noopener\">lens speed<\/a>. In the image above, the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lens_speed\" target=\"_blank\" rel=\"noreferrer noopener\">lens speed<\/a> is 2.8.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As the <a href=\"https:\/\/en.wikipedia.org\/wiki\/F-number\" target=\"_blank\" rel=\"noreferrer noopener\">f-number<\/a> is related to the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Focal_length\" target=\"_blank\" rel=\"noreferrer noopener\">focal length<\/a> you might find two <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lens_speed\" target=\"_blank\" rel=\"noreferrer noopener\">lens speed<\/a> notations on a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Zoom_lens\" target=\"_blank\" rel=\"noreferrer noopener\">zoom lens<\/a>. E.g. on a 35-105 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Zoom_lens\" target=\"_blank\" rel=\"noreferrer noopener\">zoom lens<\/a> it might be 1:3.5-4.5. This means that the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lens_speed\">lens speed<\/a> is 3.5 at 35 mm zoom and increases to 4.5 at 105 mm zoom. The more you zoom in, the more light is needed to get the same exposure.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"462\" height=\"306\" src=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/lichtsterkte-op-lens-2.jpg\" alt=\"Lens speeds 1:3.5-4.5\" class=\"wp-image-1998\" srcset=\"https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/lichtsterkte-op-lens-2.jpg 462w, https:\/\/fotografeer.nl\/wp-content\/uploads\/2021\/05\/lichtsterkte-op-lens-2-300x199.jpg 300w\" sizes=\"auto, (max-width: 462px) 100vw, 462px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Zoom_lens\" target=\"_blank\" rel=\"noreferrer noopener\">Zoom lens<\/a>es in a higher price catergory might have a contstant lens speed of e.g. 2.8 over the entire zoom range.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The diaphragm inside a lens regulates the aperture and thereby the amount of light entering the camera.<\/p>\n","protected":false},"author":2,"featured_media":1285,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[30],"tags":[74],"class_list":["post-1209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-photography-tips-en","tag-lens___en"],"lang":"en","translations":{"en":1209,"nl":1211},"pll_sync_post":{},"_links":{"self":[{"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/posts\/1209","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1209"}],"version-history":[{"count":52,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/posts\/1209\/revisions"}],"predecessor-version":[{"id":3668,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/posts\/1209\/revisions\/3668"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=\/wp\/v2\/media\/1285"}],"wp:attachment":[{"href":"https:\/\/fotografeer.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fotografeer.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}