No, it still would be a 1:1 Macro because macro reproduction ratios are independent of format. It only means the ratio of the image size to the object size.
While the angle of view would be similar to a 75mm lens on 24x36 format at INFINITY, the extension and magnification would not be the same as a 75mm lens on 24x36mm with objects in the macro distance range. So I think you are just better off calling it a 50mm 1:1 lens on APS. And I agree with you completely, a 50mm Macro seems like it would be excellent on APS, 90 or 100 would be too long in a lot of cases. JCO -----Original Message----- From: Don Sanderson [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 13, 2004 6:48 PM To: PDML Subject: Stupid Question #999, Macro lenses on ist-D On the *ist D wouldn't a 50mm 1:1 Macro lens be roughly equivilent to a 75mm 1.5:1 on a 35mm? Or, put another way: To achieve 1:1 couldn't you be 1.5x farther away? I don't mean to, and hope I won't, start the equiv./crop factor/mag. factor/DOF wars again! It just seems to me that a 90 or 100 macro would actually be rather long on the D. Not having very steady hands I wonder if I could hand hold a longer lens properly? Don (My Mom said asking stupid questions is how I learn!) 8-)
