Originally posted by jeans Thanks. After you suggested this I decided to test it on non florescent lighting. Such lighting was surprisingly hard to find since all the bulbs at my house are the energy saver variety. I guess my lcd monitor must have a florescent backlight because it had very bad bars. Anyway I determined that it only happens on high shutter speeds and only on florescent light! This is good and bad news, it means I understand the problem somewhat, but I'm pretty certain It wasn't like this when I first got the camera. At least I think it wasn't. Oh I also determined that it does show up in photos as well, only not nearly as bad as in video. Also only one bar appears in photos that is much thicker and more blurred. It reminds me of scan lines, like they're actually moving very fast. Do you think this is an artifact related to CMOS rolling shutter?
Hi jeans
Most monitors have fluoro backlighting, which is now being replaced with Led backlighting.
Depending on where you are, your AC electrical current cycles at 50 or 60 Herz.
So any shutter speed slower than 1/50th or 1/60th sec will give you a band free image.
Anything above it will show banding. The number per image is directly related to the shutter speed and electric supply's frequency.
I imagine rolling shutter would also add to the problem.
mutters