Actualy, my step-up was probably 44mm-55mm, IIRC. Tom Schofield Douglas Herr <telyt@xxxxxxxxxxxxx> wrote: At one time I had a 44mm-thread filter that worked perfectly in the early 50 'cron-R and 35 Elmarit-R Doug Herr Birdman of Sacramento http://www.wildlightphoto.com ------ --------------------------------- What are the most popular cars? Find out at Yahoo! Autos ------ Unsubscribe or change to/from Digest Mode at: http://www3.telus.net/~telyt/lrflex.htm Archives are at: //www.freelists.org/archives/leicareflex/