11-01-2010, 09:06 PM
[quote name='popo' timestamp='1288640616' post='3894']
I really don't want to go there again. While that is the case for same output size, I just wanted to make that clear I am not looking at pixel level.
That isn't answering the question I posed. Wim made a statement regarding magnification being more important for macro photography. I'm asking if, for the same output magnification, for the same diffraction limiting case, is there a difference between the two formats regarding DoF? Both with and without considering focal length too.
I think I'll have to play with some calculators later... haven't done so so far as I'm not sure if they adequately consider high magnification cases correctly.
[/quote]
If you use the same framing, and consider the magnification on image level, not on sensor size level, then the DOF will be the same for about the same diffraction level. To make the 2 images "equal" you will have to use an equivalent focal length though, else comparing will not make all that much sense.
I really don't want to go there again. While that is the case for same output size, I just wanted to make that clear I am not looking at pixel level.
That isn't answering the question I posed. Wim made a statement regarding magnification being more important for macro photography. I'm asking if, for the same output magnification, for the same diffraction limiting case, is there a difference between the two formats regarding DoF? Both with and without considering focal length too.
I think I'll have to play with some calculators later... haven't done so so far as I'm not sure if they adequately consider high magnification cases correctly.
[/quote]
If you use the same framing, and consider the magnification on image level, not on sensor size level, then the DOF will be the same for about the same diffraction level. To make the 2 images "equal" you will have to use an equivalent focal length though, else comparing will not make all that much sense.