Friday, June 07, 2002, 3:27:10 PM, Rob wrote: RS> Hi Team, RS> I was reviewing a set of 35mm B&W negs that I just cut a sleeved and on one RS> frame I noticed a strange aberration. The left hand side of the image has a RS> distinct double exposure effect there are two copies of the image with a RS> horizontal offset. Looking across the frame the difference between the images RS> becomes less until at about 2/3 across is disappears completely and the neg RS> appears sharp under a 20x magnification.
RS> The image was shot with an LX (horizontal run shutter) and was hand held, the RS> film ISO was 50 I didn't record the exposure information however it was s RS> bright day and I the lens (31mm LTD) was set at around f5.6. I can't figure it RS> out as I've never seen anything quite like it. Unfortunately I can't up-load a RS> scan at the moment so you'll have to imagine what it looks like. Hi Rob, similar problem happened on some old first production run Prakticas, with vertical shutter. The mechanism as it was in the first prototype run disengaged film advance gears during shutter opening (a strange quirk, design overlook), and the film shifted slightly _during_ exposure, due to left tension on the takeup spool. It also happened to only _part_ of the frame as it happened during X synching, so above X speed it was only part of frame... It was vertical as Prkaticas have vertical shutter. LX has horizontal... I hope this is not a same problem! Perhaps there is some problem with the film advance mechanism in your LX - that would be truly bad, I wish you it's just some easy problem to fix! Good light, Frantisek Vlcek - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
