brainiac wrote: veroman wrote:
>Diffraction, my friend, diffraction. The greater DOF at f/13/-16 is almost totally negated by the smearing at f/13-f/16. I can shoot f/13 with my 1Ds II and 5D, but not with my crops. Let me put it this way: I CAN shoot at f/13/-f/16 with my crops, but I don\'t want to.
To take the same picture with a crop you need a shorter focal length. A shorter focal length lens has more d.o.f.. Therefore you don\'t need to stop down as much to get the same d.o.f.
To make it even clearer, for IDENTICAL composition, f/16 on FF is equivalent to f/10 on APS-C (1.6x crop) in terms of depth of field. So, yes, stopping down to f/10 on APS-C is good enough.
I am shocked people do not know this by now. Sigh...
brainiac wrote: veroman wrote:
>Diffraction, my friend, diffraction. The greater DOF at f/13/-16 is almost totally negated by the smearing at f/13-f/16. I can shoot f/13 with my 1Ds II and 5D, but not with my crops. Let me put it this way: I CAN shoot at f/13/-f/16 with my crops, but I don\'t want to.
To take the same picture with a crop you need a shorter focal length. A shorter focal length lens has more d.o.f.. Therefore you don\'t need to stop down as much to get the same d.o.f.
To be even more precise, for IDENTICAL composition, f/16 on FF is equivalent to f/10 on APS-C (1.6x crop) in terms of depth of field. So, yes, stopping down to f/10 on APS-C is good enough.
I am shocked people do not know this by now. Sigh...
Sep 02, 2009 at 04:53 PM
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