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bartbob
Joined: 30 Oct 2010 Posts: 102
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Posted: Wed Nov 17, 2010 4:05 am Post subject: Electronic Tests of Graflex 1000 2A Shutter |
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This shutter's been dormant (stored, unused, set at 1/125th) for about 25 years. Brand new about 1965 in a Super Speed Graphic, it didn't see much use through about 1985. Very few fingernail scratches inside the film holders. Bellows still feels, looks and behaves as new.
Stopped by a Pro Photo Shop today to get a couple of sync cords and a box of flash bulbs and the owner said he'd test my shutter. Such a deal; he does this for free and takes about 5 minutes with his optical sensored electronic counter.
Here's how this old shutter performed:
Desired times are exact; each one half the one above it starting with 1/4 second. Times measured are listed by 3 significant digits on the counter as the effective speed of the shutter. (For a small fee, I could have got a complete report including opening, dwell time wide open and close time.) Note the average error for a half to 500th is +49%.
Errors are about the same I got photograping a spinning 7-inch disk with a white radial line from center out at 1750 rpm then photographing it using this lens/shutter feeding a Nikon DSLR monted on a board in the SSG's rotating back.
Guess who's gonna send this shutter to the Graflex 1000 shutter guru for a CLA?
Bart
Last edited by bartbob on Sun Feb 06, 2011 4:47 am; edited 1 time in total |
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45PSS
Joined: 28 Sep 2001 Posts: 4081 Location: Mid Peninsula, Ca.
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Posted: Fri Dec 10, 2010 11:18 pm Post subject: |
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_________________ The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU. |
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