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A valid question on how much the change in aperture affects depth-of-field, is whether an 70-200mm f\/4 zoom would give you the same kind of look that an f\/2.8 zoom would.<\/p>\n
For me, a fast f\/2.8\u00a0aperture is essential\u00a0on a zoom lens, especially the telephoto zooms.\u00a0For the same scenario, it gives me a higher shutter speed than the f\/4 zoom. Or I can use a lower ISO. More importantly, since I often bounce flash<\/a> in large areas, the f\/2.8 aperture gives me more chance of successfully bouncing my flash than an f\/4 aperture would.<\/p>\n <\/p>\n Keeping in mind that the how much the background appears to be blurred, depends on a few things:<\/p>\n Visually, the change in depth-of-field is incremental\u00a0as you change the aperture. You can see this in the slideshow further down.<\/p>\n If you had to look at a photograph showing amazingly thin depth-of-field, you wouldn’t be able to tell just from the photograph alone, whether f\/2 was used or f\/2.8 … but a side-by-side comparison will reveal the answer. An individual image in itself won’t. However, it will be obvious when an image was shot at f \/8 or f\/11 (on a 200mm lens for example), compared to either f\/2 or \/f2.8 … we should be able to recognize that a shallow depth-of-field was not used on the f8 or f11 image.<\/p>\n <\/p>\n <\/p>\n There are many\u00a0examples of how depth-of-field changes with aperture. But I thought it might be interesting to see this with an overlay of images, just how much the depth-of-field appears to change.<\/p>\n Jessica and I braved the cold on this day to do a simple sequence of images with the zoom set to 200mm, and used at a variety of apertures. I used a tripod to keep the framing exact, and Jessica tried to keep as still as possible. The background is a clump of trees about 20 meters behind us.<\/p>\n [SlideDeck2 id=32686\u00a0ress=1]<\/p>\n <\/p>\n Ideally, there should be a bunch of these comparative sequences done at different focal lengths and different distances between subject and background.<\/p>\n But just this one example should clearly show how the depth-of-field changes … and that while the change between (for example), f\/2.8 and f\/4 is distinct, it might not be enough reason to warrant the purchase of a more expensive lens. But that is up to personal choice and budget.<\/p>\n The lens used in this example is the Nikon 70-200mm f2.8 VR II<\/a> (affiliate<\/em>).<\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Depth-of-field and aperture change A valid question on how much the change in aperture affects depth-of-field, is whether an 70-200mm f\/4 zoom would give you the same kind of look that an f\/2.8 zoom would. For me, a fast f\/2.8\u00a0aperture is essential\u00a0on a zoom lens, especially the telephoto zooms.\u00a0For the same scenario, it gives me Read more inside…<\/a><\/p>\n","protected":false},"author":1,"featured_media":36183,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[17,42,955],"tags":[866,181,163,182,180],"yst_prominent_words":[],"class_list":{"0":"post-6573","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-general-photography","8":"category-technique","9":"category-understanding-your-camera","10":"tag-bokeh","11":"tag-choice-of-aperture","12":"tag-depth-of-field","13":"tag-dof","14":"tag-photography","15":"entry"},"_links":{"self":[{"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/posts\/6573"}],"collection":[{"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/comments?post=6573"}],"version-history":[{"count":5,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/posts\/6573\/revisions"}],"predecessor-version":[{"id":36182,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/posts\/6573\/revisions\/36182"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/media\/36183"}],"wp:attachment":[{"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/media?parent=6573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/categories?post=6573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/tags?post=6573"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/neilvn.com\/tangents\/wp-json\/wp\/v2\/yst_prominent_words?post=6573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}But what does the change in depth-of-field look like?<\/h2>\n
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An example of depth-of-field changing with aperture<\/h2>\n
Related articles<\/h2>\n
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