What is causing this? (OM1 issue)

kbg32 said:
The place that is processing your film, a machine is doing it, might not have been cleaned or the temperature of the chemistry is not consistent. I might try a different lab to see if the problem still exists.
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I meant that the problem exists on the color film, and the black and white I develop myself as above. I do not see the problem on other black and white problems on other 35mm rolls I've developed from other cameras.
 
I can see it on at least the 3 edges. Very weird, I can't think of anything the camera could be doing to selectively affect 1mm of the outer edge of each picture. Over-agitation during development on a reel could cause darkening along the top and bottom edge, but the defect you show even looks doubled up in the corners where the dark areas overlap. Ya' got me...John
 
i had something similar happen on film with an old Zenit E SLR camera .
on occasion the shutter was staying open even when the mirror was down.
 
Further to what xayraa said, do the exposures as indicated in the vf seem to agree with sunny 16 or handheld meter? If so, then it would seem to me to be additional light as suggested. Remember the OM-1 meter is influenced by stray light coming from the eyepiece, so if you wear glasses and stray light is entering from behind, you may get a too-high reading, but the exposure on film will look somewhat OK if the shutter is staying open a bit longer after mirror return.
 
Hmm! I do indeed wear glasses and I've been shooting through them! And I had noticed some unusual meter readings, so I just went outside in the sun and lo and behold the meter on the camera told me to overexpose by a full stop with my glasses on.
 
Thanks! I'll look for one on ebay.
I need a new prism screen too - mine's pretty rough-looking. If anyone has an extra one, please let me know.
 
Xray and Trius make some excellent points, definitely worth checking out. you should be able to to do some test shots to know, by a series of elimination you should be able to confirm or rule them out i.e. by taking some shots using the mirror lock up and not, taking notes of each shot along the way, it wouldn't hurt to also do some shots with the viewfinder covered and uncovered, the uncovered shots with the camera pointed toward the sun or a light source.

i'm not sure you said whether this has shown itself on all four edges either on any frames at all? if its always only three then reflection of the film mask could probably be ruled out, assuming all edge surfaces look the same

the mirror thing/lagging shutter, may well be the case, but i find it curious why it appears the overexposure line is consistent all the way around, and more so its doubling up in the corners (which would be consistent with light reflecting off the edges of the mask). i would have thought the light getting past the bottom edge of the mirror to bleed further into the frame, but it may very well be that, sounds pretty good to me...a few test shots should tell
 
Let me be clear here and say that the problem is indeed subtle. In many shots you cant even see it, which may be due to a number of factors like lighting conditions or... I don't know what.

omtest2.jpg

(trix ei 400 in 1:1 76)

But I did tests tonight, without my eyeglasses on (I had to shoot with my left eye) and judging from the results the metering was so much better as evidenced by the contrasty negs and because it looked like the filters I used actually worked - previous shots were a muddy mess with filters. But suddenly - boom - they're doing what they should.

omtest3.jpg

(trix ei 800, 1:1 76)

You can see it in the upper right corner. Maybe I'm being nitpicky - but I want to do some landscape shots in the desert (I'm going to AZ next week) with 25 or 50 iso film, and I don't want this problem blotching up shots when/if I want to make enlargements.
 
I've never been to Az, let alone in summer. So a part of me is saying "How bad could it be?". Which I guess is what everyone says before disaster strikes. My dad bought a house for cheap in Phoenix (I guess that's where my parents are going to go in the winter now) so that's why I'm going - anything photogenic around there?

Chris, I just bought an eyecup on eBay and it should arrive in a couple of days. I have the 1-13 split prism which I need/prefer. Thanks anyway.
 
Darkhorse said:
I've noticed something about many shots I've taken with my OM1. Something is screwing with the edges of the frame, actually darkening the negatives. At first I thought it was a scanner issue, but no, I can actually see the problem ever so faintly.

In many shots where there's a lot of stuff going on it's barely noticable. Other times, when there's sky for instance, it is much more pronounced. Here's the problem, enhanced for emphasis.

whatisthis.jpg


You can clearly see there's something going on.

I thought it may have simply been my error when developing but color negs shot the same weirness around the edges.

What's happening here?
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I know exactly what that is and how to fix it. The metal piece in the back of the camera that surrounds the film frame has shiny edges. You need to paint them with some flat black paint.
 
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