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Nikon DSLR Cameras
D750
DX lens on FX camera
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<blockquote data-quote="480sparky" data-source="post: 434074" data-attributes="member: 15805"><p>To show this, here's my D600 ("Full Frame/FX") and my D7000 ("Crop Sensor/DX"), side-by-side, with both in <em>Mirror Up for Cleaning</em> mode.</p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/FXsbsDXSensorsPost.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The blue-green rectangles are the actual sensors. Notice how the FX sensor on the left is larger (Nikon specs are 24m x 35.9mm) than the DX sensor on the right (Nikon: 23.6mm x 15.6mm)</p><p></p><p>I put a 50mm <strong>FX</strong> lens on the D600, it sees this:</p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/DSC_0253.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>When I put a 50mm <strong>DX</strong> on the D600, it sees this:</p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/DSC_0252.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>This is <em>exactly</em> what you would see in the viewfinder as well. These images are merely reduced in scale for posting here. No other editing was done. Notice how everything in the scene is rendered the same size?</p><p></p><p></p><p>The only difference between the two is the DX lens is not designed to cover the entire FX sensor.... it only needs to cover the smaller DX sensor. That's why the DX lens shows the black areas... both in the VF and on the sensor.</p><p></p><p>If I put either the FX <strong>OR</strong> the DX lens on the D7000 (crop sensor) , or on the D600 and shoot in DX mode, they will both record this:</p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/D7K_5812.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p></p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/DSC_0252A.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>When I enlarge the DX image to <em>match the same dimension of the FX image</em>, it appears I'm using a longer lens. I'm not. They're both 50mm. What changes is the <em>field of view</em> caused by the 'crop factor' of the smaller sensor.</p><p></p><p></p><p>An analogy would be like putting a film negative into an enlarger and running it up to make an 11x14. Then replace the 11x14 with a sheet of 8x10...... <em>without changing anything else</em>. The subjects in the 8x10 will measure the same as they are in the 11x14. There would also be no more detail in one compared to the other. Or, you could take the 11x14 and cut it down with scissors to an 8x10.... there would be no more detail when you're done doing that.</p><p></p><p></p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/FXvDXcomparison.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p></p><p></p><p></p><p></p><p><img src="http://i214.photobucket.com/albums/cc172/480sparky/Photography/FFvCropNewSmall.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="480sparky, post: 434074, member: 15805"] To show this, here's my D600 ("Full Frame/FX") and my D7000 ("Crop Sensor/DX"), side-by-side, with both in [I]Mirror Up for Cleaning[/I] mode. [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/FXsbsDXSensorsPost.jpg[/IMG] The blue-green rectangles are the actual sensors. Notice how the FX sensor on the left is larger (Nikon specs are 24m x 35.9mm) than the DX sensor on the right (Nikon: 23.6mm x 15.6mm) I put a 50mm [B]FX[/B] lens on the D600, it sees this: [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/DSC_0253.jpg[/IMG] When I put a 50mm [B]DX[/B] on the D600, it sees this: [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/DSC_0252.jpg[/IMG] This is [I]exactly[/I] what you would see in the viewfinder as well. These images are merely reduced in scale for posting here. No other editing was done. Notice how everything in the scene is rendered the same size? The only difference between the two is the DX lens is not designed to cover the entire FX sensor.... it only needs to cover the smaller DX sensor. That's why the DX lens shows the black areas... both in the VF and on the sensor. If I put either the FX [B]OR[/B] the DX lens on the D7000 (crop sensor) , or on the D600 and shoot in DX mode, they will both record this: [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/D7K_5812.jpg[/IMG] [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/DSC_0252A.jpg[/IMG] When I enlarge the DX image to [I]match the same dimension of the FX image[/I], it appears I'm using a longer lens. I'm not. They're both 50mm. What changes is the [I]field of view[/I] caused by the 'crop factor' of the smaller sensor. An analogy would be like putting a film negative into an enlarger and running it up to make an 11x14. Then replace the 11x14 with a sheet of 8x10...... [I]without changing anything else[/I]. The subjects in the 8x10 will measure the same as they are in the 11x14. There would also be no more detail in one compared to the other. Or, you could take the 11x14 and cut it down with scissors to an 8x10.... there would be no more detail when you're done doing that. [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/FXvDXcomparison.jpg[/IMG] [IMG]http://i214.photobucket.com/albums/cc172/480sparky/Photography/FFvCropNewSmall.jpg[/IMG] [/QUOTE]
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Nikon DSLR Cameras
D750
DX lens on FX camera
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