Hi guys and gals, greetings. Like the original poster from a year ago, I'm also a 'once in a blue moon' visitor, usually from search engines looking up answers, and thus my visit. I don't know if his problem is mine, as I'd also like to see his problem images, but this is one of mine and sounds similar (thus keeping this old tread alive, it comes up on search engines still). I'd call is streaking, but 'banding' works. Magenta (purple) steaks, always vertical, and quite intermittent (the worst kind, huh?).
Some research shows it happens to both Leaf Aptus 65 and 75 models, on Hassy's. Mine is a 500 CM.
I shoot with four prime Zeiss lenses:
40mm (CF) 'wide angle'
80mm 'normal lens'
120mm (CF) 'slight telephoto'
250mm 'long lens'.
What I've noticed so far:
Sometimes all is fine, but then the streaks start happening. I change lenses, all's well, then put it back on, and sometimes it's fine, but sometimes the streaking continues.
So many times I can't stop it from happening and have been tying to find a remedy as of late (I've only used the camera twice, for a Cuba series back in May of 2013 and recently in Argentina, May of 2014).
I've done a bit of research, and see it's not only my Leaf Aptus that's having this problem.
I see someone reported seeing it on a Leaf Aptus 75 they were testing, over on the Leaf Aptus website:
It never happens with the 120, CF lens!
It does seem to happen more with my 250 mm longer lens, and it's intermittent. I've got the whole system, lenses, back and camera, all in the repair shop, giving all a CLA (clean, lubricate and adjust), which I must do every few years (every year or two when I did three trips a year, now I'm only on the road once or twice per, and always 3 to 4 weeks).
So, I've got a feeling the connection from the lens to the back (sync cord) could be the problem. But then again, when I first took it in to Professional Photographic Repair in San Diego the repairman ran a test on conductivity of the synch button and said conductivity on all four lenses was fine. Hummm?
So I'm thinking it might still be the fact that the earlier lenses, not being CF's, might not have the ability to give it enough signal, even if it reads fine?
Thanks in advance if you know what's going on and will report back here.
MS
PS Never shoot less than one second exposures.