Archived posting to the Leica Users Group, 2001/09/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]It looks like an internal light leak to me. Past the lens mount, missing baffle under the viewfinder or something like that. Fortunately there is a fairly easy way to find out. Take off the camera back, put on your usual lens with a good tight lens cap on and use a locking cable release on "B" to hold the shutter open. Next duct tape a light proof cloth or material around the back of the camera so you can get in and look in the back but shut most extraneous light out. Now turn on a very bright light or go outside on a sunny day and stick your head in and find out where it is coming from. Shift the camera around so that all sides get exposed to the light. If there is a leak, you should be able to find it. John Collier PS: One Leica-User, after extensive testing similar to the above, found light leaking around the bayonet mount. > From: Dave Hillman <dave@hillmanimages.com> > > This 'fetching' result shows a problem I'm trying to understand, a light > leak that I need to fix through repair or technique. > > http://www.hillmanimages.com/bw/l23-24.html > > I'm showing it because signature of the leak may be familiar to one of > you who may be able to guide me to a solution. > > Camera is a M4-2. It may be occuring on the frame behind the curtain of > a lens change but I don't track these well enough to establish a 1:1 > correlation. They do not occur on all frames. I've not seen the problem > on adjacent frames. I suspect a problem with the shutter curtains, but > I'm guessing. Usually the problem is a lightly exposed band across the > upper half of the frame. The example posted is the worst yet. > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html