!

[fhovie]

One thing needs to be mentioned - If you put any odd lens in any odd shutter, the f-stop scale will need to be calibrated - I had bad luck with Seiko shutters - Copals have never let me down. I have a compur that is at least 60 years old and workd fine. I guess care, cleaning, use and the environment have a lot to do with that.

[Ole]

I'll second that, Frank. My oldest Compur holds a 1912 vintage Xenar 180mm - and is still reasonably precise.

[Jim Chinn]

When looking at older shutters and lenses remember just because the threads match doesn't mean you won't screw the rear element right into the shutter blades. And also when working with fine machine threads, you may think the lens and shutter mate untill you have about a half or full turn of threads stripped.

[JohnArs]

Hi Aggie

There are also more shutters wich still are made:
Sinar Copal behind the lens mechanic shutter times from 8 sec to 1/60 sec
Sinar Expolux electronic shutter from Sinar times fro 1/500 up to around 10 hours
Then there is a Horseman shutter also electonic and there is also one from Rollei:
The last 2 are almost created for digi backs!
And do not forgett the good old black hat he is best for very long times! He work like a Swiss watch!