Chuck, You might try Central Camera in Chicago http://www.centralcamera.com they're in their 111th year. Yup, that's one hundred and eleven..... Bob On 6/2/2010 8:26 PM, Chuck Heiney wrote: I thought I'd put this out to the members of this list. I would like to find a source fora lens, preferably in working condition, that would be of the sort that the mid to late 19th century photogs - O'Sullivan, Jackson, et al - would used for their landscapes. Or does anyone have any idea what a modern day equivalents would be in focal length and aperture - especially the widest opening. Ultimately I'd like to experiment with this old glass on a medium format digital back. -- ///// ( O O ) --------------------oOOO-----O----OOOo-----73 de w8imo------------- I plan to live forever. So far, so good...... |