Douglas, I've used several of them over the last twenty or so years and they are fairly good. The problem is that they don't have 6 or 7 elements so they aren't as good as say a telemore 95 II which does have 7 elements and very well corrected. The vivitar macro-focussing teleconverter also has 7 elements and a helicoid extension tube built-in & is wonderful. It makes say a 50mm f/2 Nikkor lens into a 1:1, 100mm f/4 lens and this combo is incredibly sharp. Art Tafil ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour ------ Unsubscribe or change to/from Digest Mode at: http://www3.telus.net/~telyt/lrflex.htm Archives are at: //www.freelists.org/archives/leicareflex/