I like the photo a lot. It certainly doesn't look as if it's been stolen from fleabay, and a fleabay seller would probably think thrice before "borrowing" it. Well done! -- Hoary 01:49, 19 October 2006 (EDT)
I'll try to answer to your SGML questions. I did not write this part of the text, but it seems to be correct and it corresponds to the values given by Alfred Klomp.
This is not a f/11 design lens, but the aperture plate put between the lens and the film has a maximum aperture of f/11. I own three Clacks and each of them has a slightly different aperture plate. One has (1) a f/11 aperture, (2) a close-up lens and (3) a yellow filter, another has (1) an f/11 aperture, a slightly larger aperture and a yellow filter, the third has a f/11 aperture and a close-up lens only.--driesvandenelzen 04:10, 5 December 2006 (EST)
- You own three more Clacks than I do!
- I understand a bit more, but not much more. When you say "a slightly larger aperture", is this perhaps a typo for "a slightly smaller aperture" (or "a slightly larger f number")? Anyway, get hold of a lens with a conventional aperture ring and stop it down to f11. Now close it just one third of a stop. Is the difference between these two apertures about the difference between the apertures of the Clack? If so, the article's right -- but the designers of the Clack seem utterly crazy to me. (I might design the Clack to switch between f10 and f16.) -- Hoary 04:59, 5 December 2006 (EST)
- You're right, I meant slightly smaller aperture and thus slightly larger f number. As to your measuring suggestion: I'll try it when I get home.--driesvandenelzen 06:10, 5 December 2006 (EST)