I recently purchased a Schneider G-Claron 270mm WA f/11 in barrel. Trying to determine if this lens is really useable for LF (14x17). Holding the lens in a piece of cardboard in front of the camera, focused at infinity, it comes up short in coverage on 14x17, but comes very close to the corners. Doing research on internet, I find lots of conflicting information in comments such as: “the 270 WA G-Claron will cover 12x20! The bad news is that at infinity the 270 WA is rather marginal!” and: “I have a 270 WA G-Claron. Tested it on the 20x24 just to see image circle...18-19" tops by my recollection, which makes 12x20 possible ONLY with closer subjects. The good news was that for contact printers, it was pretty good all the way out to the edge. It IS large, but can be fitted to a Copal #3”, and: “schneider lists: 72deg @ f22; 780 grams; 110mm filter (90mm rear thread); 400mm i.c.; 4 element 4 component for 1:2 to 2:1. distortion is not good (+- 1%) beyond 50deg from 1:inf to 1:3 (no distortion @ 1:1) “ I think 12x20 and 14x17 have the same coverage requirements so if it works on 12x20, shouldn’t it work on 14x17?? It looks to me as if the WA Claron would only cover 11x14, 8x20, etc. Although I think I have my answer already, just wanting to confirm with users of this lens. (The reason I bought the lens - very cheap)
Thanks.
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