[popo]

[quote name='wim' timestamp='1288628483' post='3888']

Not for macro, actually, 1:1 is 1:1 whether you use FF or APS-C. The difference is that you have a 22 mm wide image on APS-C and a 36 mm wide image on FF, the difference being that at 1:1 you capture more on FF than on APS-C of the same subject. And DoF wise there is no diffeence, as DoF with macro is limited effectively by magnification alone.

[/quote]

I'm suffering from thinking fail at the moment introducing magnification into the equation. Is this a variation on the "equivalent FoV and equivalent effective aperture" at low magnifications?



In practical terms, at my level of macro photography I'm finding myself often balancing (badly) between adequate DoF and diffraction softening.



Let's take a simple case: say you have a 12MP APS-C sensor and 12MP FF sensor so we can disregard pixel count effects. For the equivalent *output* magnification, stopping down both systems to their respective diffraction limits, do you get the same or different DoF between them? Side question: does focal length factor in at all here or is it entirely due to magnification? (ignoring FoV effects)