OK yet another lens question... Pre-purchasing my 11x14" Chamonix, had a brass lens mounted into a Copal 3 shutter by S K Grimes. Lens was: f/9.5 "Portrait Group 11x17 to 16x20 New York Lens Co. Sole U L Agents No 834". Focal length seems to be around 600mm. Couldn't find reference to it in the Vade Mecum. Could anybody shed light on this optic? Stopped down totally covers 11x14 with excellent image sharpness. Am totally happy with the image this optic produces.
thanks
Greg
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