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General Photography
Portrait
How your lens selection controls portrait outcome
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<blockquote data-quote="WayneF" data-source="post: 541747" data-attributes="member: 12496"><p>I thought I was of the opposite opinion. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Seems clearly obvious to me that cropping an existing image, or cropping with a telephoto lens or a DX sensor, none of which cases affect the perspective already seen due to standing in that same spot. The lens and sensor and picture can only capture what it sees from standing in that spot. Cropping only trims the edges, it does not change the perspective seen there, from that same spot.</p><p></p><p></p><p></p><p></p><p>Macro is at close range, but not a special case of perspective. The perspective change (for one example, meaning apparent size difference of near and far items) is the same for a one inch subject depth at ten inches, as is seen in a one foot subject depth at ten feet. It is a percentage thing. Simple similar triangles.</p><p></p><p></p><p></p><p></p><p>Perspective is NOT about the lens used (not directly, but the lens could influence where you must stand). You may just be saying a normal lens is about 50mm FX or 30 mm DX, regarding what we imagine the human eye view to be. </p><p>IMO, not sure, but I think you may refer to angular field of view dimension as perspective. I don't do that.</p><p></p><p>Because any lens sees the same scene and perspective if from the same spot. Sure, some lens views are wider than others, but the part that is actually seen is the same perspective if standing in the same spot - I just showed that above.</p><p></p><p></p><p></p><p>I can agree with that. It is not the lens, it is where you stand with it. Focal length can affect depth of field, and magnification, and cropping, but not perspective, unless you move where you stand. The lens can offer good reasons to move, but moving where we stand is what affects perspective.</p></blockquote><p></p>
[QUOTE="WayneF, post: 541747, member: 12496"] I thought I was of the opposite opinion. :) Seems clearly obvious to me that cropping an existing image, or cropping with a telephoto lens or a DX sensor, none of which cases affect the perspective already seen due to standing in that same spot. The lens and sensor and picture can only capture what it sees from standing in that spot. Cropping only trims the edges, it does not change the perspective seen there, from that same spot. Macro is at close range, but not a special case of perspective. The perspective change (for one example, meaning apparent size difference of near and far items) is the same for a one inch subject depth at ten inches, as is seen in a one foot subject depth at ten feet. It is a percentage thing. Simple similar triangles. Perspective is NOT about the lens used (not directly, but the lens could influence where you must stand). You may just be saying a normal lens is about 50mm FX or 30 mm DX, regarding what we imagine the human eye view to be. IMO, not sure, but I think you may refer to angular field of view dimension as perspective. I don't do that. Because any lens sees the same scene and perspective if from the same spot. Sure, some lens views are wider than others, but the part that is actually seen is the same perspective if standing in the same spot - I just showed that above. I can agree with that. It is not the lens, it is where you stand with it. Focal length can affect depth of field, and magnification, and cropping, but not perspective, unless you move where you stand. The lens can offer good reasons to move, but moving where we stand is what affects perspective. [/QUOTE]
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How your lens selection controls portrait outcome
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