<p>I'd like to revive this moribund group by joining it. I'll be posting a picture of my collection of Karats shortly, all 31 of them, and 4 dismantled ones. In the collection, I have 3 with Heligon f2 lenses, 3 with Xenon F2 lens, and 2 with Solagon f2 lenses. All of the f2's are on Karat 36's.</p>