PaulJ
Regular
Not sure if I love or hate the freaky flare.View attachment 4220
Oh no noTwo exposures merged because of camera malfunction?
Strange.
I know the CCD's used in the older cameras are made of two chips. I'm not sure about the M240 CMOS sensor. If the exposure is a result of a misfire- could be the "non-uniformity correction" is off?
Without knowing much about the actual situation I'd guess this may be a shutter problem: the upper part of the second photo is heavily overexposed, looks like at least 3 stops, and the lower part didn't get (hardly) any exposure. Or there was something (your hand?) blocking the lower part, throwing off exposure; this is much more likely than a shutter problem, because the shutter would have to be insanely fast in the lower part given that you used 1/1000 s.Here's another example from today. I should probably reconsider my soft shutter button?
As an extra bit of interesting phenomenon, these shots are taken within the same second, the exposure (manual) same in both. I wonder what Leica is doing to the raw data
View attachment 213764View attachment 213765
Without knowing much about the actual situation I'd guess this may be a shutter problem: the upper part of the second photo is heavily overexposed, looks like at least 3 stops, and the lower part didn't get (hardly) any exposure. Or there was something (your hand?) blocking the lower part, throwing off exposure; this is much more likely than a shutter problem, because the shutter would have to be insanely fast in the lower part given that you used 1/1000 s.
Still very weird. I think I'd set the camera on a tripod and take a lot of shots, hundreds, to see if and how often it happens. Edit: or maybe the second shutter curtain catches up with the first, leaving no gap, that would explain the no-exposure part. But I'm not a Leica expert by any means, maybe someone more knowledgeable can chime in.There were no changes in the scene during this second. Manual ISO, manual exposure, manual aperture.
I believe it's the way Leica wired the shutter trigger to the shutter mechanism. My soft release button can be very soft at times... if the electrical connection disconnects right after first triggering the shutter, it causes this. Anyway, that's my speculation on this issue.
I see your point about the fast shutter speed...
Maybe that kind of banding shouldn't occur with shutter speed of 1/1000 sec; what if my soft release of trigger caused the camera to malfunction and select a speed three stops slower? 1/125 second then. For example, if there's a capacitor in the circuitry and my too quick of a press wasn't enough for it to fully charge to designed numbers.
I'm not going to like it but as a first step I'm going to remove the soft release button and see how things are.
If you're talking about the Discrete/Soft shutter options, they were removed in M240.I would try to change some of the shutter options- I found it made a difference on the M Monochrom and M9 in some strange cases.
I have a semi-"proof" about M240's CMOS chip also doing things in two parts. The pic is alright but a certain darktable mask was able to show an interesting division in the middle of the horizontal frame, halving it in two.I know the CCD's used in the older cameras are made of two chips. I'm not sure about the M240 CMOS sensor. If the exposure is a result of a misfire- could be the "non-uniformity correction" is off?