On Wed, 14 Mar 2007 16:58:01 -0400, J. C. O'Connell wrote
> Regarding working distances, the 50mm f.l.
> ON APS gives much better working distances
> than it did on on 35mm FF format for same
> subject framing. This is because you dont
> have to get as close (or need as high a magnification) to fill the frame
> on APS as you did on FF 35mm. 

But you still have to be at the same distance to achieve 1:1 or 1:2 as the 
case may be, fact! Again depends on the subject matter and whether you 
require a particular ratio for scientific or technical reasons.

John

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