{"id":21,"date":"2015-01-31T21:30:07","date_gmt":"2015-01-31T21:30:07","guid":{"rendered":"http:\/\/light.elliottmccrory.com\/?p=21"},"modified":"2015-02-01T10:06:07","modified_gmt":"2015-02-01T16:06:07","slug":"primary-effects-aperture-introduction","status":"publish","type":"post","link":"https:\/\/light.elliottmccrory.com\/?p=21","title":{"rendered":"Primary Effects: Aperture &#8212; Introduction"},"content":{"rendered":"<p>Aperture is, far and away, the hardest leg of the exposure triangle to understand.<\/p>\n<p>The aperture is the size of the opening in the lens.\u00a0 Only light that goes through that opening can hit the sensor.\u00a0 You can see the aperture variation on a large camera in manual mode\u2014it is same way as the iris in your eye that gets smaller or larger.<\/p>\n<p>Some people are confused by this concept: they think that making the aperture smaller will constrict the field of view, much as cupping your hands in front of your eyes constricts what you see.\u00a0 This is not the way it works.\u00a0 To fully understand why is, unfortunately, beyond the scope of this manuscript.\u00a0 Suffice it to say that it does NOT constrict the field of view; it only reduces the amount of light that goes into making that view.\u00a0 Think of the brightness in a north-facing room (in the Northern Hemisphere).\u00a0 A room with a large window will be brighter than a room with a small window.<\/p>\n<p><a href=\"http:\/\/www.mir.com.my\/rb\/photography\/companies\/canon\/fdresources\/fdlenses\/50mmf18shutterbladC.jpg\"><img decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/www.mir.com.my\/rb\/photography\/companies\/canon\/fdresources\/fdlenses\/50mmf18shutterbladC.jpg\" alt=\"\" width=\"300\" \/><\/a> <a href=\"http:\/\/upload.wikimedia.org\/wikipedia\/commons\/a\/aa\/Blueye.JPG\"><img decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/upload.wikimedia.org\/wikipedia\/commons\/a\/aa\/Blueye.JPG\" alt=\"\" width=\"300\" \/><\/a><\/p>\n<hr \/>\n<p>Next:\u00a0<a title=\"Primary Effects: Aperture \u2014 Derivation of the numbers used for Aperture\" href=\"http:\/\/light.elliottmccrory.com\/?p=23\">Derivation of the numbers used in Aperture<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aperture is, far and away, the hardest leg of the exposure triangle to understand. The aperture is the size of the opening in the lens.\u00a0 Only light that goes through that opening can hit the sensor.\u00a0 You can see the aperture variation on a large camera in manual mode\u2014it is same way as the iris&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-21","post","type-post","status-publish","format-standard","hentry","category-aperture"],"_links":{"self":[{"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=\/wp\/v2\/posts\/21","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21"}],"version-history":[{"count":3,"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=\/wp\/v2\/posts\/21\/revisions"}],"predecessor-version":[{"id":99,"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=\/wp\/v2\/posts\/21\/revisions\/99"}],"wp:attachment":[{"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/light.elliottmccrory.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}