> > > > > > It has all the optical goodness of the A lens with none of the rear > element reflections. > > > bill > > ---------- > > I don't know how the A 100 Macro relates optically to the FA 100 Macro, > which I have. The DFA 100 Macro is close optically to the FA, with some > change to the optical formula to eliminate rear reflections. Funny > thing--throughout the whole digital era I've use my FA 100 F2.8 Macro a > lot, and have yet to see a rear element reflection. > > Joe > > >
The A lens is a different beastie from the later lenses. The A lens is 7 elements in 7 groups. The later lenses are 9 elements in 8 groups. The A lens is what Pentax dubbed a Fixed Rear Element Extension design, whatever that means. I never saw another lens from them with the FREE designation. Anyway, the A is a good lens, but subject to rear element reflections. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
