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Bruce_robbins
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Username: Bruce_robbins

Post Number: 19
Registered: 06-2008

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Posted on Friday, April 12, 2013 - 12:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

As a change from footering with my dysfunctional FA I thought I'd take a break and replace the mirror foam on a recently-acquired F. This one has no mirror foam at all. I was going to use 3mm think foam from a Jon Goodman kit. Would that be about right?

On a related note, the back feels very slightly loose - the sort of feeling you get with a hinged SLR back when the foam needs replacing. Would replacing the cord seal on the rear of the body be likely to cure this or might the camera just being showing signs of age?
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Glenn
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Username: Glenn

Post Number: 1072
Registered: 07-2006

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Posted on Monday, April 15, 2013 - 09:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

When sitting on the foam the mirror is usually parallel to the screen. Place a bit of your 3mm foam between screen frame and mirror when shutter on 'B'. If it looks OK, then it is - otherwise try a piece of thinner foam.

Changing the door seals can 'tighten' up the fit of a rear door. You should also note that a strained door can also exhibit what you are finding, along with the good old wear and tear of hinge and latch. Personally I would replace the seals.
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M_currie
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Username: M_currie

Post Number: 298
Registered: 07-2006

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Posted on Tuesday, April 16, 2013 - 09:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

On the Nikon F a slightly loose back is probably a non issue. You might be able to adjust the latches a little, but I would not bother with anything unless it actually leaks light. The rope seal is very effective and lasts pretty much forever.

On the mirror foam, it's needed only for quieting, as far as I know, and must be pretty thin. It will work without foam all right, but of course it makes quite a clack. If it's too thick it will interfere with the mirror return and the mirror lock function. You'll notice this quickly, so if in doubt, dry fire it without film, and make sure the mirror behaves right before putting film in.

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