I have purchased a 19 inch F7.7 Goerz Dagor in Compound shutter (appears to be t he original, marked CP Goerz New York) to use on a 12X20 camera. In general, th ere should be no problem with coverage from what I understand. My question: th e lens I have (serial # 754457, does this provide pretty accurate dating info?) is single-coated, both according to Lens and Repro, who sold it to me, and my ow n casual inspection. The front diameter looks just a bit smaller than the other , older, uncoated versions of the lens I have seen. Does coverage remain the sa me (eg adequate for 12X20 w/ movements)in the later vintage, coated incarnations of these lenses? What might be the date range on this lens?
Thanks for any help you can offer,
Nathan
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