Honestly it is not that bad. I think my 7" was worse and I was able to get it all out with a 3 month light session. I have not attempted to bleach the staining out of this guy yet.
Originally Posted by Jason Greenberg Motamedi
Honestly it is not that bad. I think my 7" was worse and I was able to get it all out with a 3 month light session. I have not attempted to bleach the staining out of this guy yet.
I have a customers 24" Aero Ektar here and will check the barrel length if I can to see if they are the same. At the moment, the front cell is resisting removal.
(and yes, it is f/6.0)
Curious what you come up with. What type of work are you doing to the lens?
I'm only mounting it on a lensboard for the 16x20 camera I'm building for him. He'll be shooting wetplate, portraits.
I am thinking I'll build myself a sturdy 8x10 with no front movements for my 12" 2.5.
I am building a custom 5x7 Press Graflex that I will use this lens on. Oddly wanting to shoot 5x5 square on this beast with the option to open it up for 5x7 when the mood strikes.
My Eastman 13.5" f3.5 barrel measures 3.8705" (just a hair under 3 7/8"), so the same as Tracy's 12" f2.5 shutter. A caveat: My calipers are cheap and my technique is poor. But I have two sets of calipers and the measurement was consistent.
My 610mm (24") f6 lens barrel is the same size and has the same threads. However, my version is a Bausch & Lomb AeroTessar, it is not not branded Kodak Aero-Ektar. Maybe they were the same manufacturer, either B&L or Kodak?
Last edited by Jason Greenberg Motamedi; 9-Feb-2024 at 16:56. Reason: Added images
It's quite possible that both companies were working to the same contract, or identical contracts, in order to produce the numbers of lenses needed. In 1942 they were in a hurry for optics like these (among other things). (In those days, Kodak's optics plant, Hawk-Eye, was just a mile down the street from the B&L factories, btw.)
This is great! So the barrel length is the same as the 12" / F2.5. Do you thing the threads are the same as the 12" as well?
My Eastman 13.5" f3.5 barrel measures 3.8705" (just a hair under 3 7/8"), so the same as Tracy's 12" f2.5 shutter. A caveat: My calipers are cheap and my technique is poor. But I have two sets of calipers and the measurement was consistent.
My 610mm (24") f6 lens barrel is the same size and has the same threads. However, my version is a Bausch & Lomb AeroTessar, it is not not branded Kodak Aero-Ektar. Maybe they were the same manufacturer, either B&L or Kodak?
I don't know, sorry, I don't have a 12" lens to try...
Ah, for some reason I thought you did.
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