Archived posting to the Leica Users Group, 2007/05/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Why not sell the DR and buy a good contemporary Rigid which is optically identical and only cheaper because of the (much) more simple mount? Frank On 7 May, 2007, at 21:07, Peter Klein wrote: > LUG: A couple of obscure lens and filter questions: > > 1. One of my favorite lenses is my 50/2 Dual-Range Summicron. > Which will not mount on a certain digital camera. What are the > chances of my finding a broken or bad-glass Rigid Summicron, into > which I could screw my DR's lens head? How much might that cost > me? (I realize the mount focal length would have to match). > > 2. Is there such a thing as a 40-39mm filter step-down ring? > That's forty, not forty point five. The purpose would be to use a > 39mm filter on an old Canon 50/1.8 lens. (If not, I might have to > resort to the "dental floss in the filter threads" trick, but it's > a rickety solution.) > > 3. I have the early 1980s 90/2 Summicron with a 49mm filter > thread. If I were to use a 49-46mm step-down ring (which I know > exists) and mount a 46mm filter on it, would it vignette? > > Yes, these questions involve that certain digital camera, adapting > lenses to same, and trying not to buy to many off-brand filters > while waiting to get the free ones. > > --Peter > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information