Drew Lahat

A bit late to the party, but the issue is as relevant as ever.   We shoot a lot of high-end corporate videos and online commercials using GH2's and Sony EX1/EX3's. They almost always involve shots of people operating computers, tablets, smartphones etc.   The "fault" is the monitor's. It's often not the LCD panel itself, but the backlight that drives it. These are often CCFL (fluorescent tubes), and while you can adjust the LCD refresh frequency, the CCFL frequency might be fixed. If the backlight has aged or is off for some reason, or the power supply that drives it is off, the frequency won't match any standard and you'll have to either replace the monitor or use a camera that lets you dial the shutter speed / scan frequency (= not a DSLR).   For example, we've never had issues with Apple monitors, they look fine with our GH2's at 1/50 and 1/60 speeds. But our Dell U2410 LCD's (all of them) will flicker no matter what. With the EX1 we were able to dial custom shutter angles to cancel it out.   PS I see refresh issues with all the videos you posted - the good monitor looks good on all cameras, and the problem monitors have problems on all cameras - the artifacts look different but they're there.