Hey y'all, So I got some LF lenses from a friend who had no need or want for them. One was a 135mm Raptar in a Rapex which I really enjoy, but the other is a 210mm (i think) Orbit lens in a Copal-1. It seems like a no-name lens and it's no so clean either. I'd like to put something a little schnazzier in there. Does anybody have recommendations for a good lens that would fit the Copal-1? I'm thinking that maybe I'd be able to get a good deal if I waited for some 210mm lens elements to pop up for sale, w/o a shutter. The other question I have is, would it be fool hardy to put in another focal length lens in the shutter? I know that the f/ stops would then be incorrect, but couldn't one just easily convert those f/stops to the new FL? Thanks in advance!