Schneider-Kreuznach G-Claron 150mm f11

[Oren Grad]

I see nothing about "WA" lenses.

See attached.

[Steve Goldstein]

Thanks Oren. That’s the same version as the one I have.

My earliest literature dates from 1967 and lists the 150 as f/9, while the lens in question dates (from its serial number) to around 1971. This doesn’t lend much support to the “earlier 150s could only get to f/11” theory, I’m afraid.

[Jason Greenberg Motamedi]

No knowledge, but I do observe that the barrel is marked at f9 rather than f11.

[Dan Fromm]

I have two Schneider brochures that list the G-Clarons -- 150mm to 355mm. All are f9-64, 6/4, flat-field APO design with 64 degree coverage for close-up work.

I see nothing about "WA" lenses. Maybe it was an early or short-lived variant. Seems less likely to be a literature error -- like with Fuji literature.

Is there something in special about this lens?

Fuji had an early 150mm W f6.3. It was slower than their other W lenses -- f5.6 -- because of the design. Maybe the same sort of thing was a limitation on the early G-Claron -- at 150mm they could only get to f11?????

In post #3 above Mr. Grad addressed the f/11 WA G-Clarons.

Early f/9 G-Clarons were dagor types. They were replaced in the 1960s by f/9 plasmat types. archive.org is currently off-line for maintenance. When it comes back, go to http://web.archive.org/web/201009220...kreuznach.com/
archiv/archiv.htm to see the catalogs.

Steve, I think I found the lens you referred to. Auction #185363718449. The s/n makes it a dagor type. My copy of the dagor type catalog shows only f/9ers. I have no idea why it is engraved 1:11. The cells are in a modern G-Claron barrel. AFAIK, the change from dagor type to plasmat type was accompanied by a change in barrel design.

[xkaes]

Thanks Oren. That’s the same version as the one I have.

My earliest literature dates from 1967 and lists the 150 as f/9, while the lens in question dates (from its serial number) to around 1971. This doesn’t lend much support to the “earlier 150s could only get to f/11” theory, I’m afraid.

Does anyone have actual knowledge, not speculation, about this seemingly oddball lens?

The PDF says the WA f11 lenses are a 4/4 design, not 6/4 like the f9 versions. Unfortunately, it doesn't say anything about the angle of coverage -- which I would guess is less. The WA lenses may or may not have been an earlier line of lenses, but it was definitely a different version -- and explains the slower f-stop. Typically, faster lenses, or lenses with more coverage, have more elements.

[Oren Grad]

I've merged three threads on the same topic. A tough one - we still don't have an answer!

[Dan Fromm]

The PDF says the WA f11 lenses are a 4/4 design, not 6/4 like the f9 versions. Unfortunately, it doesn't say anything about the angle of coverage -- which I would guess is less. The WA lenses may or may not have been an earlier line of lenses, but it was definitely a different version -- and explains the slower f-stop. Typically, faster lenses, or lenses with more coverage, have more elements.

Look here: http://schneiderkreuznach.com/archiv..._claron_wa.pdf

Coverage is given at the bottom of p. 2

[lassethomas]

Look here: http://schneiderkreuznach.com/archiv..._claron_wa.pdf

Coverage is given at the bottom of p. 2

I just get a 404 on that link

[xkaes]

Here's a more complete spec sheet. Perhaps this is what Dan is referring to, but it does not have the 150mm.

https://jbhphoto.com/store/wp-conten...claronwa01.pdf

[Dan Fromm]

Here's a more complete spec sheet. Perhaps this is what Dan is referring to, but it does not have the 150mm.

https://jbhphoto.com/store/wp-conten...claronwa01.pdf

There never was a 150/11 WA G-Claron. 210, 240 and 270. That's all.

For the WA G-Claron brochure I referred to in post #27 above, go to http://web.archive.org/web/201009220...hiv/archiv.htm and look around. FWIW, I got a 404 when I clicked on the link in post #27 above. Sorry 'bout that.