Graflex.org Forum Index Graflex.org
Get help with your Graflex questions here
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Electronic Tests of Graflex 1000 2A Shutter

 
Post new topic   Reply to topic    Graflex.org Forum Index -> Lenses Help
View previous topic :: View next topic  
Author Message
bartbob



Joined: 30 Oct 2010
Posts: 102

PostPosted: Wed Nov 17, 2010 4:05 am    Post subject: Electronic Tests of Graflex 1000 2A Shutter Reply with quote

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
Back to top
View user's profile Send private message
45PSS



Joined: 28 Sep 2001
Posts: 4081
Location: Mid Peninsula, Ca.

PostPosted: Fri Dec 10, 2010 11:18 pm    Post subject: Reply with quote


_________________
The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Graflex.org Forum Index -> Lenses Help All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group