chris_bavaria Posted September 30, 2021 Share Posted September 30, 2021 I have a student who every time she switches to one certain lens on her camera the film frame comes out totally blank. When switching back to the first lens everything comes out fine. I can see through the lens by itself and the view finder when attached to the camera. The light meter is working fine with it and the shutter release goes off fine and the film is advancing normal. But somehow the light is not hitting the film. Any ideas? Link to comment Share on other sites More sharing options...
JDMvW Posted September 30, 2021 Share Posted September 30, 2021 We want information What camera? What lenses? Describe the steps she takes as she mounts and unmounts the lenses 1 Link to comment Share on other sites More sharing options...
steve_gallimore1 Posted September 30, 2021 Share Posted September 30, 2021 G-series lens on a classic Nikon body? (would shoot at minimum aperture, which could well give an apparently blank frame) 1 Link to comment Share on other sites More sharing options...
ed_farmer Posted September 30, 2021 Share Posted September 30, 2021 Yep . . . It's likely that the frames are not "blank" but grossly under exposed . . . Well . . . You said "blank". I guess that could mean they are claar or black. Black would indicate gross over exposure. In the end, the lens and body are not working together properly. The aperture interface on the lens could be damaged or the lens could be improperly mounted. Knowing the model of both would help greatly. Link to comment Share on other sites More sharing options...
glen_h Posted October 1, 2021 Share Posted October 1, 2021 Easiest, if unloaded, is to open the back and look through while tripping the shutter. That will show that the shutter actually opens, and you can usually see the size of the aperture. 1 -- glen Link to comment Share on other sites More sharing options...
steven_endo Posted October 1, 2021 Share Posted October 1, 2021 (edited) Not familiar with Nikon system(s) but perhaps it is an older lens that protrudes too deeply into the mirror box and is blocking the mirror from flipping up? If the camera has a mirror lockup, you can try that. Or, as Glen H. says, fire the camera with the back open without film. Edited October 1, 2021 by steven_endo 1 Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted October 2, 2021 Share Posted October 2, 2021 (edited) Who says it's a Nikon? Could be a 'blad with a dodgy leaf shutter. In fact the latter is far more likely. Although a G series lens on an old film body would almost certainly underexpose. But then the meter most likely wouldn't indicate a sensible exposure. Edited October 2, 2021 by rodeo_joe|1 Link to comment Share on other sites More sharing options...
steven_endo Posted October 2, 2021 Share Posted October 2, 2021 G-series lens on a classic Nikon body? LOL I saw this but didn't check to see if it was written by OP. But my guess is still the same. Perhaps lens is protruding too deeply into the mirror box. Assuming it's an SLR.... Link to comment Share on other sites More sharing options...
Aoresteen Posted October 3, 2021 Share Posted October 3, 2021 Who says it's a Nikon? Could be a 'blad with a dodgy leaf shutter. In fact the latter is far more likely. ....... Or a Bronica with a dodgy leaf shutter :) Link to comment Share on other sites More sharing options...
steve_gallimore1 Posted October 3, 2021 Share Posted October 3, 2021 If the OP doesn't reply, we'll never know! Link to comment Share on other sites More sharing options...
JDMvW Posted October 4, 2021 Share Posted October 4, 2021 The OP is a long-time member, but he seems to have a history of posting enigmatic queries about unidentified equipment and then never checking back. 1 Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted October 4, 2021 Share Posted October 4, 2021 Having read those previous threads, I'm past caring now. :rolleyes: Link to comment Share on other sites More sharing options...
glen_h Posted October 4, 2021 Share Posted October 4, 2021 The OP is a long-time member, but he seems to have a history of posting enigmatic queries about unidentified equipment and then never checking back. Maybe he spends so much time out taking pictures (with cameras that don't work) that he doesn't have time to write about them. -- glen Link to comment Share on other sites More sharing options...
John Seaman Posted October 5, 2021 Share Posted October 5, 2021 He has students ... Link to comment Share on other sites More sharing options...
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