Kodak 203mm (8 inch) f7.7 lens in Compur Shuter

Kino · Mar 13, 2020

OK, picked this nice lens at a estate sale a few weeks ago and am just getting around to looking it over. I find it strange that a f7.7 lens is mounted in a Compur Shutter that has a maximum aperture of f4.5.

Kludge? Crazy old photographer or is it an acceptable shutter for this lens?

Looks like a Graflex type lens board; probably a 5x7 Reflex Graphic?

Bob S · Mar 13, 2020

It’s shutter broke and someone remounted it without knowing how to calibrate the apertre scale for the new lens. If the old shutter broke the lens could have also been damaged. Shoot and see.

Dan Fromm · Mar 13, 2020

Both wrong. The Supermatic EKCo mounted Rochester-made 203/7.7's in has threading that's not compatible with Compurs. EKCo also made the lenses in the UK and offered them in Epsilon and Compur shutters.

And, Bob was partly right. The cells were remounted. But that had to have been in an Epsilon or Compur originally.

Kino · Mar 13, 2020

So it's a UK lens set in a incorrectly calibrated, but thread compatible, German shutter.

Dan Fromm · Mar 13, 2020

Exactly.

Kino · Mar 13, 2020

I always wind up with the misfits...

shutterfinger · Mar 13, 2020

Aperture=lens focal length / diameter of the entrance pupil. The entrance pupil is the diameter of the aperture opening as viewed through the front of the lens.
As previously stated a remounted lens.

Kodak 203mm (8 inch) f7.7 lens in Compur Shuter

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