Crap of the crop, I’m confused!

Started Jul 11, 2010 | Discussions thread
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lacix
lacix Regular Member • Posts: 355
Crap of the crop, I’m confused!

If APS-C image format is claimed to be identical in perspective, but just a crop of the full size image.
Than, why is the significant DOF differences?

550D with 50mm f1.4 @10 meter of total DOF=2.16 meters
1Ds Mark III, 50mm f1.4 @10 meter of total DOF=3.48 meters

Thanks for your help!

UBL

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