...remove the old foam from the pentaprism but almost never fit a replacement. It's not strictly necessary and the reluctance to fit a replacement stems from the risk of further damage to the pentaprism ...
...black goo.A professional CLA and foam seal replacement is the official fix (CLA=Clean, Lubricate, Adjust) but the ME Super is very labour-intensive to strip down and there's a high risk of breaking ...
...black out during exposure. As you didn't mention any of these obvious signs, I'll continue with the shutter. Rewind any film and open the camera back. Remove the lens. Use the film advance lever to ...
black spots on negatives/slides. The debris can also get into your lenses so remove it asap. Gooey foam light seals are even worse as it's both corrosive and abrasive (due to the grit it attracts) and
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