I just bought an Eastman 10" Projection Anastigmat f4.5 with a beautiful old variable aperture like the old Velogstigmat. I think this lens was used on an 8x10 enlarger back in the day. I have seen online Kodak catalogs listing this lens from the early 40's.
My question is this. There appears to be a purple ish coating quite faint. It doesn't look like lens separation as it is consistent across the glass from the front and back. But the lens looks too old to be coated.
Being an enlarger lens, what difference visually will it make if I use it for a taking lens?
Lastly, when I take the elements out of the mount, it really resembles a Velogstigmat. Are they both Tessars?
Anybody like these lenses?
Thanks,
Mark
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