Previous versions of brainiac's message #8143262 « 5D2 150% vs 7D 100% »
brainiac Offline [X]
Re: 5D2 150% vs 7D 100%
brainiac wrote:
That depends if you are defining depth of field in terms of pixels or in terms of fractions of the image.
dhphoto wrote:
Why do you do that?
Why do you post such meaningless replies in the guise of being clever?
My reply explains the disagreement you and alundeb are having. If you define the depth of field as the locus of positions where the lens resolution satisfies the pixel resolution, then you get different results for different cameras even when the same lens is used from the same position. On the other hand, if you define the depth of field as being a locus of points which satisfy a certain resolution as a proportion of the image, then you mostly don\'t get a different result for the same lens at the same distance, regardless of camera used, assuming the cameras used are capable of resolving above the stated resolution. Typically when people discuss impressions of d.o.f. they mean the latter, but when they get calculators out and get nerdy about it they mean the former. That\'s the source of this pointless dispute about d.o.f..
Feb 17, 2010 at 06:58 AM
Previous versions of brainiac's message #8143262 « 5D2 150% vs 7D 100% »
