> >Macro lenses like the 100/2.8 don't suffer from loss > >of infinity (unless it is a dedicated macro lens). > > I'm a little confused here. How do you distinguish a "dedicated" > macro lens from a mere "macro" lens? I thought the 100/2.8 was a > "dedicated" macro lens. Are you talking about something like an > enlarger lens used for macro?
Perhaps, "dedicated" was not the correct term. Mea culpa. English as a second language. Some macro lenses cannot focus at infinity, or at least infinity focus is not recommended. E.g. (if I'm not mistaken) the Schneider Macro-Symmar LF lenses are designed for 4:1 to 1:4 magnifications, which would exlude infinity. In contrast, a "typical" macro lens like the 100/2.8 macro has an extended focus range, allowing close focus while maintaining infinity focus. I would think that macro lenses are optimized for closeup (1:2) and macro (1:1), so perhaps the infinity focus end might be a bit "soft" - relatively speaking. Lars -- Lars Michael [EMAIL PROTECTED] 87GT http://www.larsmichael.com/ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
