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Nikon DSLR Cameras
D600/D610
DX Auto-Crop
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<blockquote data-quote="J-see" data-source="post: 388442" data-attributes="member: 31330"><p>I've been thinking why in my case the FX does better and I think it is very simple.</p><p></p><p>If for a moment we consider the numbers used as correct, we have 10/24 DX vs 19/24 FX.</p><p></p><p>That implies the lens sharpness only is used at 42% capacity on the DX vs 79% on the FX. Using that for the 24Mp shot vs 12Mpix crop, that's 24*0.42 vs 12*0.79 = 10.08 vs 9.48.</p><p>The quality probably isn't equally distributed and is highest at the center which comes as an advantage to the FX here.</p><p></p><p>This could explain why the shots show the opposite of what I previously assumed.</p><p></p><p></p><p>To add: I'm using a very simple formula now to check when it pays. If my FF/lens (P-Mpix/3)*2 equals or is greater than the DX/lens P-Mpix it might do better on the FF and is worth testing. If it is lower, DX is probably better for crop-shots. But only testing it might show how true that is.</p><p></p><p>Tamron at 600mm:</p><p></p><p>[ATTACH]127883[/ATTACH]</p><p></p><p>[ATTACH]127884[/ATTACH]</p><p></p><p>Strange; manual mode same shutter speed but both different data in the EXIF.</p></blockquote><p></p>
[QUOTE="J-see, post: 388442, member: 31330"] I've been thinking why in my case the FX does better and I think it is very simple. If for a moment we consider the numbers used as correct, we have 10/24 DX vs 19/24 FX. That implies the lens sharpness only is used at 42% capacity on the DX vs 79% on the FX. Using that for the 24Mp shot vs 12Mpix crop, that's 24*0.42 vs 12*0.79 = 10.08 vs 9.48. The quality probably isn't equally distributed and is highest at the center which comes as an advantage to the FX here. This could explain why the shots show the opposite of what I previously assumed. To add: I'm using a very simple formula now to check when it pays. If my FF/lens (P-Mpix/3)*2 equals or is greater than the DX/lens P-Mpix it might do better on the FF and is worth testing. If it is lower, DX is probably better for crop-shots. But only testing it might show how true that is. Tamron at 600mm: [ATTACH=CONFIG]127883._xfImport[/ATTACH] [ATTACH=CONFIG]127884._xfImport[/ATTACH] Strange; manual mode same shutter speed but both different data in the EXIF. [/QUOTE]
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Nikon DSLR Cameras
D600/D610
DX Auto-Crop
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