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Nikon DSLR Cameras
D5100
Advice needed on a new lens for portrait work
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<blockquote data-quote="Eyelight" data-source="post: 341425" data-attributes="member: 24753"><p>This is unlikely.</p><p></p><p></p><p></p><p>Can you define distortion?</p><p></p><p></p><p></p><p>Field of view affects working distance.</p><p></p><p></p><p></p><p>Then an FX with an 85mm would also need to be roughly 3-5 feet from the subject. Forget either as my discussion above was using the working distance of the FX 85mm combination.</p><p></p><p></p><p></p><p>Why?</p><p></p><p></p><p></p><p>Assuming there would be distortion, we are not at 3-5 feet. We are at 7-8 feet.</p><p></p><p></p><p></p><p></p><p>DX has already cropped the image.</p><p></p><p></p><p></p><p>Covered above.</p><p></p><p></p><p></p><p>It is simply a fact that as the camera moves closer to the subject the variation in magnification between objects at varying distances grows greater. This is why noses get bigger.</p><p></p><p></p><p></p><p>I don't disagree. I would use long as opposed to short, but my preference does not change how stuff works.</p><p></p><p></p><p></p><p>These do not support the stated ideas.</p><p></p><p></p><p></p><p>==============================================================================================</p><p></p><p>In general, I agree with the idea that longer is better, because in many cases a longer lens is more flattering to the human face. One of the things that led me to the above conclusions is that we used 105mm on the long roll camera back in the day because it was a good choice to cover individuals and small groups, just as an 85mm would be a good choice for FX and a 50mm would be fine for DX. </p><p></p><p>Though I have worked this out on paper so to speak, I plan to do some test shooting, and I will be the first to report if I find different.</p><p></p><p>One more thing. I really hate long post, including this one I'm posting, but felt this was worth conversing about.</p></blockquote><p></p>
[QUOTE="Eyelight, post: 341425, member: 24753"] This is unlikely. Can you define distortion? Field of view affects working distance. Then an FX with an 85mm would also need to be roughly 3-5 feet from the subject. Forget either as my discussion above was using the working distance of the FX 85mm combination. Why? Assuming there would be distortion, we are not at 3-5 feet. We are at 7-8 feet. DX has already cropped the image. Covered above. It is simply a fact that as the camera moves closer to the subject the variation in magnification between objects at varying distances grows greater. This is why noses get bigger. I don't disagree. I would use long as opposed to short, but my preference does not change how stuff works. These do not support the stated ideas. ============================================================================================== In general, I agree with the idea that longer is better, because in many cases a longer lens is more flattering to the human face. One of the things that led me to the above conclusions is that we used 105mm on the long roll camera back in the day because it was a good choice to cover individuals and small groups, just as an 85mm would be a good choice for FX and a 50mm would be fine for DX. Though I have worked this out on paper so to speak, I plan to do some test shooting, and I will be the first to report if I find different. One more thing. I really hate long post, including this one I'm posting, but felt this was worth conversing about. [/QUOTE]
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Nikon DSLR Cameras
D5100
Advice needed on a new lens for portrait work
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