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Camera door tightness


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#1 Chad Mayer

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Posted 23 January 2009 - 07:10 PM

My IIC door has a little play when closed and locked and I don't know how much is tolerable. Do the two door locking tabs wedge/pull the door tight or is a certain about of movement ok to have?
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#2 Dan Goulder

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Posted 23 January 2009 - 07:29 PM

My IIC door has a little play when closed and locked and I don't know how much is tolerable. Do the two door locking tabs wedge/pull the door tight or is a certain about of movement ok to have?

There shouldn't be play once the door is latched. Make sure the latch knob is turned all the way horizontal, as some times they can get hung up when not quite in the fully locked position. If there's still a problem, then have a tech go over it if you're unable to spot the problem (which could be bent locking tabs). Although it's possible to shoot unfogged film with that camera when the door is slightly unlatched, there's no point in taking chances.
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#3 John Sprung

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Posted 23 January 2009 - 08:25 PM

In the old days, those doors were always just a little loose. Some people used black tape on them. You can test if it matters: Run about a foot and a half of B&W film forward, stop and take it out in the bright sun, and turn it all various directions to try to get some light to leak in. Then run another foot and a half. Develop this three foot piece in a stills darkroom, and see if you get evidence of a leak in the middle of it.




-- J.S.
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#4 Chris Keth

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Posted 23 January 2009 - 09:40 PM

FWIW, during checkout I would reject a camera body that had any play in the door when it's closed. For me, it's not worth the risk of having tape come off or something like that.

How do the seals look? The light seals are usually compressed a little bit when the door is closed. The lack of strong seals might be causing the play.
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#5 Tim Carroll

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Posted 25 January 2009 - 06:39 AM

How do the seals look? The light seals are usually compressed a little bit when the door is closed. The lack of strong seals might be causing the play.


There really aren't any seals on a IIC door. It is just metal against metal with an "interlocking light trap" sort of design. When the doors on the IIC get loose, if there is not any excessive wear of the metal around the door frame or on the door itself, the usual culprit is the little tabs that rotate into position when you lock the door. They are usually bent. They can be carefully put back into their original shape, but you must do so carefully.

Best,
-Tim
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