After I read what you had written, I compared the DOF scales on my 50mm2.8 macro and 50mm1.4. (It seemed to me that the macro would exhibit less DOF but both, by force, would always have the same viewpoint.)
But even though the DOF scale is significantly different on each lens (tight on the macro and expansive on the 1.4), they do match up to the same distances to indicate that each would each have the same DOF in a given situation.
Thanks!
--Chet
From: Lon Williamson <[EMAIL PROTECTED]> I remember only this from what I was taught: For a given film size, a subject the same size in the viewfinder, at the same aperature, has the same DOF regardless of lens. Fill the frame with a 24mm lens at f8, and do the same with a 400mm lens at f8 (same subject, of course), and you have the same DOF. Long lenses appear to have less DOF because we tend to use them to "magnify". Short lenses appear to have less DOF because we tend to use them to include surroundings.
