121mm f8 Super Angulon in Synchro Compur lens board size

**Jeff Keller** · 4-Nov-2018, 19:35

The shutter appears to be mounted in a housing which has a larger diameter mounting thread than the shutter itself. The rear lens group screws into the housing rather than the shutter. (As best I can tell) Hopefully the attached picture comes across. I measure 48mm for the outside of the housing but it is mounted on an extended board and my calipers barely fit inside the tube.

jeff

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**Daniel Unkefer** · 4-Nov-2018, 20:24

It's impossible to remove the front cell without taking the entire lens completely apart. There's a #0 deep inside the outer casing (per the catalog), but obviously the rear mounting flange is way bigger than that. I seem to recall that they did that so as to utilize the smaller shutters faster top speed? Back when people used Super Angulons wide open and handheld...….

See above ^^^ Not so easy to accurately measure this unit but two others so far have provided measurements. Close enough to cut a hole in a lensboard?

Looks like he has a Sinar lens also from the look of the rear board. The catalog references 75mm, looking at the above I could believe that.

**Dan Fromm** · 4-Nov-2018, 20:27

Thanks, Dan, for the pictures and explanations. Who'da thunk it?

The retaining ring looks pretty normal for a #0.

**Daniel Unkefer** · 4-Nov-2018, 20:35

Could be!

**ottluuk** · 6-Nov-2018, 00:37

The 121/8 SA apparently came in several different mounts - some (later production?) are mounted directly on common shutters.
Others have a special casing and modified controls around the shutter.
Mine has a casing but is (at least cosmetically) different from dentkimterry's (see attached picture). The shutter is labeled Synchro-Compur, its plastic-tipped controls move in a slot cut to the outer casing and the shutter's own casing is smooth metal, not the wavy pressing seen on dentkimterry's. The rear element has a fat cylindrical adapter piece going straight to the lens board. I haven't tried to remove it so I can't say what size hole is under it. I could check the size and take better pictures in a couple of weeks when I'm near the lens again – just posting to show another variation.

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**C Henry** · 6-Nov-2018, 05:32

I have two versions of the 121mm SA lens. The first is in an integrated lens/shutter which requires a 52.5mm lensboard hole. I then subsequently purchased a Copal 0 version.

**neil poulsen** · 7-Nov-2018, 09:32

Originally Posted by C Henry

I have two versions of the 121mm SA lens. The first is in an integrated lens/shutter which requires a 52.5mm lensboard hole. I then subsequently purchased a Copal 0 version.

That's what I'm wondering . . . why not get the more recent version? I have a recent version mounted in a Copal shutter. It's been a good performer, and there's no problem mounting the lens.

Or, trade up to the multi-coated 120mm SA.

**Jeff Keller** · 7-Nov-2018, 14:14

The older version has the 10 blade aperture.

The Nikkor 120 f8 has a larger image circle.

There are quite a few choices. Pick whatever makes you happy,

Jeff