Yes, it helps a lot. At least I know what I'm looking for anyway. Conveying it to a potential seller might be a whole new can of worms.1966 Schneider literature I have shows the 240mm Symmar was mounted in the "II/5 2" Compur shutter. This would be the No. 2 Rim-set Compur with the "II/5" indicating a tube length of 25 mm. Tube length is the distance between the front and the back that the lens cells seat against. Diameter of the thread screwing in to the shutter is 45.8 mm, thread pitch is 40 threads per inch (as far as I can tell why this is not a metric thread is lost in antiquity.) Unlike the No. 1 Compur, front and rear threads are the same diameter. Shutter's top speed is 1/200; X synch. only. Diameter of the shutter is 78.1 mm. These dimensions are from a Compur Werke parts/service manual.
Other Schneider lenses using this size shutter, including the tube length, were the 150 mm Xenotar and the 165 mm Angulon.
BIG CAVEAT: 1970 Schneider literature I have (post discontinuation of the No. 2 Compur) shows these lenses in a No. 3 Electronic shutter.
Hope this helps.
David
Yes, it's very confusing for somebody like me looking to put a lens back into a lone shutter. You almost have to know someone who has actually done what you want to do. Those folks seem pretty far and few even on this site.Since you have the lens cells, measure their thread diameters to be sure they match the stated shutter. Compur #0 and #1 shutters are the same size as the corresponding Copal, but Compur II shutters are a world of incompatibility unto their own (by reputation; I've avoided ever actually needing one).
Yes, that's exactly what I was thinking after David's post. I think I'll just set back and watch the big auction site for a 240mm/420mm with bad glass and buy it just for the shutter. If one ever comes up?the problem is the two donor lenses David mentioned are more expensive than the lens you have, in fact I wouldn't be surprised if your lens was a donor to one of them.
Even as I was writing I was thinking these two lenses wouldn't be reasonable donor candidates given their usual asking prices.the problem is the two donor lenses David mentioned are more expensive than the lens you have, in fact I wouldn't be surprised if your lens was a donor to one of them.
Without any documentation saying what lens cells fit it what shutters everything is hit and miss. It really makes it a gamble when trying to find and buy a shutter for a set of lens cells. For me, I'll just set back and wait until a proper shuttered lens comes along with bad cells. If the price is right I'll buy it. If it's not, I'll just keep watching and waiting. I'm in no big hurry.Another lens that has displaced some 240 -420 cells from their shutter is the early Dagor type G-Claron 300mm f9. Yes, the more common later plasmat version is Copal 1. A month ago I bought a Tele Arton 360 from KEH in the Electronic 3 shutter for 129 bucks totally to get that shutter, although the lens is very nice. In theory, my 270mm Graphic Kowa f9 which needs 56mm Copal 3S should have fit the 56mm bushings that the Tele Arton came in. But even when all those ducks are in a row, you still have machine tolerances that cause a misfit. The Graphic Kowa was so tight in the Schneider bushing I didn't pursue it, I may get some lapping compound and see it I can persuade, but once aluminum binds in brass threads, you're pretty much whistling dixie. Best advice is to put your cells on ebay and send them to the next owner.
the later era of compur/copal 0, 1, & 3 makes reshuttering really easy (with the exception of the 3S issue), and I've done it with about a half dozen lenses from a mamiya 50/6.3 up to an Apo Ronar 480/11. The only issue being aperture scales, but if you only use later shutters with equal distance per full stop, thats really easy to solve too.
My Symmar 1:5,6 /240 1:12/420
Symmar 01 by João Avelar, no Flickr
The shutter is a Linhof COMPUR
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I need to build /find a developing tank to 5x7 negatives
a Stearman 810 daylight developing tray can be configured to develop 2 5x7 at a time. It can also handle 4 4x5 or 1 8x10. depending on your needs it may be a good option.
I have these lens elements (240mm f5.6 - 420 f12) and want to buy a shutter to put them in. I know it's probably a Compur rim-set shutter, and was wondering what other lenses might also use the same exact shutter size. With Copal shutters you can usually tell by the stamped number on the bezel of the shutter itself, but how do you tell the difference in the later Compur shutters?
No problem Tim! I'm just going constantly check the big auction to try and find one with bad lens elements or a defective shutter on the cheap. As for your kids and their "stuff"? You should have told them "my stuff will be up front and easy to get at". Too late now.John, I have purchased this shutter/lens: If I can ever find it after three moves and a flood later, I'll show it to you so that you have some additional Info. It will be a couple of weeks until I can do a deep dive search for it. It may be buried within two step kids belongings. Side note: I got tired of paying for two adult children's (step children's) storage units so I agreed to let them store their things here. They buried my things.
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