Archived posting to the Leica Users Group, 1998/06/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The term APO has been used rather loosely by some manufacturers. It reminds me of the stereo power ratings of the 70's and the horsepower wars of the 60's. At least in Leica's case, it means something. It is my understanding that APO to Leica means that the lens is corrected thru the entire focussing range, not just at infinity. This is really important on a lens like the 100/2.8 APO Macro R. This lens is truly phenominal, and is reason enough to own an R camera. Don't be fooled by imitations! Bill Rosauer