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Nikon DSLR Cameras
D7500
FX Lenses on D7500
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<blockquote data-quote="nickt" data-source="post: 655396" data-attributes="member: 4923"><p>A dx sensor is smaller than an FX sensor. The dx sensor does not capture the entire image that is cast onto the film plane. That smaller captured area ends up getting enlarged to a standard size, hence the apparent zoom or crop factor. So on a dx camera it makes no difference if you use a dx or fx lens. Compare this to a 35mm negative, get the 35mm negative printed at 5x7. Then take that negative and trim 1/8" off each side. Print the resulting cropped negative again at 5x7. That's the DX concept. I guessed at the 1/8" but you should get the idea: Less image captured, but its enlarged to fit the same paper size that you printed the full size negative on.</p><p></p><p>Now for the lens... Either fx or dx lens will work on dx. The difference is the dx lens is a cheaper design. They 'cut corners', figuratively and literally. The outer edges of the cast image won't be captured by the smaller sensor so the dx lens can be designed cheaper and lighter. The image that spills beyond the sensor does not have to be good. But put that dx lens on an fx sensor and you might get an image with distortion at the edges and corners. Or maybe vignetting. Or you may get away with it and not see any noticeable problems.</p></blockquote><p></p>
[QUOTE="nickt, post: 655396, member: 4923"] A dx sensor is smaller than an FX sensor. The dx sensor does not capture the entire image that is cast onto the film plane. That smaller captured area ends up getting enlarged to a standard size, hence the apparent zoom or crop factor. So on a dx camera it makes no difference if you use a dx or fx lens. Compare this to a 35mm negative, get the 35mm negative printed at 5x7. Then take that negative and trim 1/8" off each side. Print the resulting cropped negative again at 5x7. That's the DX concept. I guessed at the 1/8" but you should get the idea: Less image captured, but its enlarged to fit the same paper size that you printed the full size negative on. Now for the lens... Either fx or dx lens will work on dx. The difference is the dx lens is a cheaper design. They 'cut corners', figuratively and literally. The outer edges of the cast image won't be captured by the smaller sensor so the dx lens can be designed cheaper and lighter. The image that spills beyond the sensor does not have to be good. But put that dx lens on an fx sensor and you might get an image with distortion at the edges and corners. Or maybe vignetting. Or you may get away with it and not see any noticeable problems. [/QUOTE]
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Nikon DSLR Cameras
D7500
FX Lenses on D7500
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