retcheto Posted April 13, 2018 Share #1 Posted April 13, 2018 Advertisement (gone after registration) I have a monochrom M246 and it seems perfect to me. The only issue I'm having is with long exposures, say 8 seconds +. When I turn the camera to a vertical configuraion, I get a splotch of what looks like an inner reflection of light perhaps? I haven't done enough tests to see if this happens in a horizontal orientation, but I'm usually photographing landscapes so maybe I don't notice it because it's a white sky. This happens regardless of what ND filters I use. I don't have any problems with normal photographs, only very long exposures. Anyone else seen something like this? Attached is an example (unprocessed) Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/283641-light-leak-on-long-exposures/?do=findComment&comment=3499638'>More sharing options...
Advertisement Posted April 13, 2018 Posted April 13, 2018 Hi retcheto, Take a look here Light leak on long exposures?. I'm sure you'll find what you were looking for!
retcheto Posted April 13, 2018 Author Share #2 Posted April 13, 2018 Here's another shot that shows the same patch of light in the lower left Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/283641-light-leak-on-long-exposures/?do=findComment&comment=3499639'>More sharing options...
LocalHero1953 Posted April 13, 2018 Share #3 Posted April 13, 2018 There have been a few posts in the past about light leak around the M mount during long exposures. I can't remember if they were as short as 8 secs. The solution was to place a wide rubber band around the mount, or a child's elasticated hair band (google 'scrunchy'). 1 Link to post Share on other sites More sharing options...
retcheto Posted April 13, 2018 Author Share #4 Posted April 13, 2018 Thanks I forgot the cardinal rule of posting...search the forum first! I'll try what you suggest and see if that fixes it, thanks! Link to post Share on other sites More sharing options...
DirkR440 Posted April 14, 2018 Share #5 Posted April 14, 2018 I help you a bit with searching :-) https://www.l-camera-forum.com/topic/212964-monochrom-long-exposure-issue/ Link to post Share on other sites More sharing options...
brill64 Posted May 1, 2018 Share #6 Posted May 1, 2018 It's light leaking in through the lens mount & yes a rubber hair band solves it. Link to post Share on other sites More sharing options...
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