It has at least 3.
When Schneider sold off surplus stock Xenar, G-Claron, Centre filters. etc, in the early 2000s, they stated that their Copal mounted G-Claron lenses were optimised for use to Infinity. Essentially that meant different spacing to the copy camera barrel mount lenses.
In an article on post WWII CZ LF lenses, one Apo Tessar has a surprisingly large maybe 1cm spacer to convert between Macro/Copy use and normal Infinity.
The 90mm f6.8 Angulon has a bad reputation, well those under the 5 million serial number. The late Dean Jones of Razzle Dog Polaroid conversion fame realised that the issue was actually the batch of Compur #0 shutters used. The tube size was often out of tolerance, too long, he re-machined to the correct tolerance and suddenly a poor lens became sharp.
So yes, spacing can be critical.
Ian
I just ran a few sheets of HP5+ in my Chamonix 4X5 with the 240mm G-Claron tight in the shutter and then spaced to the Schneider specs of 53.5mm. I'm going to develop them tonight and see what they look like. I only had my 4X5 here with me and no 8X10, but it should give me an idea if it's a spacing problem or not.
They're hanging right now and I'll check and scan them in the morning. I hope the spacing length solves the problem. If not I'll keep digging until I find it.That sounds like a good test John
I don't know if this relates...but I always wanted a 210 Claron Dagor...and found one for sale....cells only for $100.
I took the 240 cells out of their Copal 1 home and replaced them with the 210. The 210 works like a charm.....so it could well be the press shutter specs/tolerances. The standard Copal 1 suits them to a T.
How interesting. My 90/6.8 Angulon is very nice, although the coverage is a bit tight. Mine has a 8,882,*** serial number and is mounted in a Synchro Compur-P shutter. I am sure it is the original shutter. Carol Flutot overhauled the shutter.
And my 240/9 G-Claron is very high resolution. It is mounted in a Copal No. 1 shutter. I bought it via Mr. Kumar, who often advertises here.
I bought a low SN 90mm Angulon in the late 1980s which was soft, I tried another which was similar. However, I eventually s found a sharp one, these were all in Synchro-Compur shutters with no pre-view lever from memory the SN was in the 7 million, I sold it with a camera 18 months ago.
My current 90mm f6.8 Angulon is in the newer Synchro Compur, it's probably one of the las with a SN 11,38**** so around early1970.
Ian
John, I had a 240 G Claron that i used on my 5x7 & it was flawless....& sharp. I was never disappointed in the results. Good luck sorting out the mounting/ shutter issue
It's pretty much been solved, but I still have to try it on my 8X10 camera. So far I'm now happy with it, but the f9 makes focusing in dimmer light a little difficult at times. Hopefully I'll be able to take pictures like the one GregY posted.Cool, like a piece of watercolor. How you do this?
Cool, like a piece of watercolor. How you do this?
Using the GClaron 240mm - on a 2x3 view camera, and even more oddly, with a digital back... you get a cheap tele, and work always in the sweet spot of the lens. Did some test shots - here is the full frame (compressed so doesn't look sharp), and the 100% crop - which is sharp, can see the spider web....
JW, I've used the 150/210/240/305 G Clarons and never failed to get really fine results.
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