Mamiya Press Standard Focus Issue

noahswan said:

The issue is the same fogging all across the frame as in the picture above. I cant post most of the pictures I took because they exceed 2mb, to answer your comment. The streaks do not show outside of the exposed frame and are on every frame of every roll

Click to expand...

You have options:
- resize the pictures (use a computer to resize the file, for example).
- post them to someplace like imgur or flickr and post the link here.
I'm emphasizing this because although Photrio members are generous with their advice, there's an aspect of asking people to play guessing games by asking them to debug a camera they can't see.

The images that you showed, where the light leak doesn't go into the rebate, show that the leak is coming from in front of the film holder, because it's blocked by the gate of the roll film holder. So for example it is unlikely that it has anything to do with the darkslide slot or the back/hinge area of the film holder. It could still be the area where the film holder sits against the back of the camera, the gap between movable back and body of the camera (normally the rear bellows would block this, but maybe they are damaged), reflections off the inside of the camera that are shadowed by the rear opening of the body, a hole somewhere in the lens mount or front of body, like a missing screw (That's a wild guess based on the way the light leak appears to be shadowed by a corner - there's one corner the leak doesn't get into).

I have shot a roll and it only does this at 1/500s and 1/250s. With This abd it not goint into the rebate I think it is safe to say that I have a dragging shutter?

I will do a full roll under 1/500 and 1/250 to see.
Will report soon

P.S
I the event that it would be a shutter priblem, could this just be solved with some contact cleaner and a wipe?

Turns out the shutter speed doesn’t matter so it must indeed be a light leak. But how is it this big if it doesn’t show up with a flashlight in the dark?

You can't always see a light leak easily. Film accumulates exposure over time more than your eyes, so if (for example) there's a small gap between the film holder and back, and you're carrying the camera around in daylight, eventually the gap gets oriented at the right angle to let light from the bright sky or sun onto the film. Finding such leaks with a flashlight can be difficult. Try to reason from where the leak is on the film (what parts of the film are shadowed from the leak by internal structures of the camera), inspect the light seal between back and film holder (yarn in a groove?), extend the rear bellows to make sure it's sound, look for missing screws that leave a hole, and so on.