this looks similar to an out of sync issue when shooting under florescent light when your voltage is 220 60cycles and your using 48 or 50 shutter.
That was my first thought as the banding is rolling. it's similar to the phasing issue you often get with refresh rates on screens etc or as you say different cycles. takes me back to my film days
The footage is h.264 and i did try varying the shutter speed to no avail.
Banding was still there under a different light source.
To be honest i didn't spend too much time pushing the tests because i didn't know whether it was a sensor issue and none of the usual tests were resolving it. Not to mention when i was bracketing exposure during some tests the images were completely solarised when the lens was wide open so.... um yeah.
I've only just started venturing into the DSLR side of things due to client demand. usually i shoot with Arri Alexa's, Reds or Sony F5's/55's so i'm open to any advice on optimal use of these cameras.
I'm thinking about giving the install another go but obviously cautious.
Only other things i can think of that may have messed up the install was the use of a micro SD in an adaptor but that really shouldn't hurt or maybe i put the wrong files on the card. I put all the files in the nightly build folder on the card. The Autoexec.bin, the ML folder and the .fir file. To be clear i put the files in the 'Magiclantern-Nightly' folder on the card not the 'Magiclantern-Nightly' folder containing the files.
Any Red flags there.
It really looks like some kind of phasing issue to me which means hopefully the sensor is safe to do some more extensive testing with but who knows...