Yoricko Posted July 17, 2009 Share #1 Posted July 17, 2009 Advertisement (gone after registration) Got my M4-2 quite some time ago but it seems to have some sort of problem. Very irregular spot on about 50% of the images. Sometimes it happens 5 times in a row, sometimes it appears once and goes clear for 4-5 frames. It APPEARS to occur at the same spot, but only recently I found a spot that was IN-BETWEEN the frames! The spot always looked the same, and it looked odd. Here are some samples. FS0916_M42_026 on Flickr - Photo Sharing! FS0916_M42_020 on Flickr - Photo Sharing! FS0916_M42_011 on Flickr - Photo Sharing! FS0915_M42_007 on Flickr - Photo Sharing! Link to post Share on other sites More sharing options...
Advertisement Posted July 17, 2009 Posted July 17, 2009 Hi Yoricko, Take a look here Love my M4-2 but .... I'm sure you'll find what you were looking for!
hermannhkg Posted July 17, 2009 Share #2 Posted July 17, 2009 Does it happens with the same lens ? If so, then it could be internal reflections of the lens. Regards, Hermann Link to post Share on other sites More sharing options...
Yoricko Posted July 20, 2009 Author Share #3 Posted July 20, 2009 Thanks for the reply Hermann, I shot with different lenses, but the spot is still there! (Jupiter-12 35mm 2.8, Nokton 50mm 1.5, Summarit 50mm 1.5) Link to post Share on other sites More sharing options...
martha Posted July 20, 2009 Share #4 Posted July 20, 2009 Have you held your shutter curtain up to a bright light to inspect integrity of same? Take lens off and open back. Shine a birght light at the front of the camera. A pinhole in the curtain could produce "spots." Link to post Share on other sites More sharing options...
Yoricko Posted July 23, 2009 Author Share #5 Posted July 23, 2009 Have you held your shutter curtain up to a bright light to inspect integrity of same? Take lens off and open back. Shine a birght light at the front of the camera. A pinhole in the curtain could produce "spots." Checked in a dark room at night with a strong torch. Both sides, shutter advanced half-way, and all the way. No pinholes. Link to post Share on other sites More sharing options...
gvaliquette Posted July 23, 2009 Share #6 Posted July 23, 2009 I seem to remember a previous thread with a similar problem that turned out to be an internal light leak from the view/rangefinder assembly. Try searching for it. (Sorry, I don't have the time to do it now) Good luck. Guy Link to post Share on other sites More sharing options...
Guest maddoc2003jp Posted July 23, 2009 Share #7 Posted July 23, 2009 Advertisement (gone after registration) In between the frames ? My guess is that this is a light-leak and not the shutter. A shutter-problem should be visible in every frame and since it occurred with different lenses it can't be internal reflections, either. Are the strap-lugs still fixed and can't be rotated at all ? Otherwise, an internal light-leak. near the take-up spool. Link to post Share on other sites More sharing options...
Yoricko Posted August 28, 2009 Author Share #8 Posted August 28, 2009 Brought to a Serviceman (he knows how to service Leicas but he isn't a Leica almighty all-knowing expert). Tried to patch up but not sure where is the leak. Scanned a "contact print". The leaks are marked red. there are more but they aren't quite visible on the "contact print". They occur randomly, they don't normally occur indoors but sometimes they do. Sometimes they occur in rapid succession and sometimes it just disappears for 10 frames or so. So, any ideas of the source of the leak? Do take note of the last leak after the last frame. Link to post Share on other sites More sharing options...
kodaktrix Posted August 28, 2009 Share #9 Posted August 28, 2009 Have a look at the upper back door! Maybe it is loose and moves more or less, dependent on Your individual camera movement. Inspect the door in a dark room using a strong light, remove the lens, stick the light in, turn on "B" and expose, if You try to move the back door, You should be able to see a leak, if it is in that position. Or take a spotted film strip, place it in the camera, so that the frame and the shutter window match, and figure out were the leak must be. Remember, the developed filmstrip must be put upside down in the camera! "Kodak 400tx" points to the the bottom side of the camera and the matt surface of the film is directed to the shutter frame window! It cannot be a loose lug, as the position of the spot stays in the same place, so it must be in an area where the film is flat in one layer, and not wound in an increasing number of layers. Regards Oliver Link to post Share on other sites More sharing options...
earleygallery Posted August 28, 2009 Share #10 Posted August 28, 2009 It could be a gap in the back door - you could check by shining a bright light at the back of the camera, with the lens removed and peering inside. However, I think it is more likely to be a leak coming in from the viewfinder/rangefinder area - there are some internal seals apparently which can fail. Another idea - put a new film in, use light proof tape and tape up the rear door then use a bright light and shine it into the viewfinder/rangefinder windows at different angles. Take a few frames like this, then tape up the viewfinder/rangefinder windows, remove the tape around the rear door and do the same with the rear door - process of elimination! Link to post Share on other sites More sharing options...
wizard Posted August 28, 2009 Share #11 Posted August 28, 2009 I seem to remember a previous thread with a similar problem that turned out to be an internal light leak from the view/rangefinder assembly. Try searching for it. (Sorry, I don't have the time to do it now) I second Guy's opinion. My M3 had the same problem, at almost the exact same location. Andy Link to post Share on other sites More sharing options...
Yoricko Posted August 29, 2009 Author Share #12 Posted August 29, 2009 Thanks for the replies folks. In my 2nd attempt to shine light in a "dark" room, I "think" I found the leak. Is the leak around here normal? You can only view it at an extremely narrow angle, and it is very faint, even in a dark room with bright torches. When I advance the shutter, the leak kinds "moves" along with it. Link to post Share on other sites More sharing options...
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