Gareth

It does help, thanks nahua. Yes, I understand monitors use different refresh rates. The majority of my test monitors are fixed at 60hz and not all show the rolling bars. The iPad2 for example (60hz refresh I believe) does not show them regardless of shutter speed. It's interesting that you get bars using the GH2 and not the MkIII. If any other GH2 owners could shoot a couple of seconds of an LCD monitor (with a matching refresh/shutter speed) it would still really help me gauge if the rolling bars are more of an issue with my setup or the GH2 in general. Many thanks.

Very odd. A friend sent me some footage taken of their monitor with their GF1 and it too is completely motionless. I really don't understand it. I'd appreciate anyone else sharing their experience so I can start to get a feel for if this is specific to my camera. Thanks again Axel.

Thanks Axel. I understand moire and I'm not concerned about that - I should have made that clear. I'm referring to the rolling dark bars you call frequency interference. My understanding was exactly as you suggested, that if I matched monitor refresh rate with camera frame rate and shutter speed I would eliminate the bars but that's not the case. Here's some 30fps (29.97) 1/60 of the same 60hz monitor. The bars are different but still very obvious. http://youtu.be/RUS6K7AhzNo

Looking at those example videos again I should probably explain... The DMC video shows pulsing but I'm not concerned about that - there is no banding. The GH2 video shows four monitors, the first two are a pair in a dual monitor setup, they show the worst banding. The third, smallest monitor also shows banding but not as severe. The fourth doesn't show any banding. The footage is PAL 25 fps with the shutter at 50. I'm rotating the camera to show how the bands don't remain vertical, they follow the angle of the camera.

Hello all I've got my hands on a GH2 and I was planning on shooting some footage of various LCD screens. This will be custom software in use at specific locations so I can't use Camtasia or similar. Whilst running some tests, I've noticed some severe banding on certain screens. All the screens so far have been 60hz. I've shot in PAL 25fps and NTSC 30fps at both 1/50 and 1/60 (and other shutter speeds) but I can't lose the banding. The frequency of the bands changes but no shutter speed loses it completely. All other settings are either neutral or off i.e. standard mode flat and no ExT, no Digital Zoom etc. The same screens shot on my point and shoot Lumix DMC-TZ10 show no banding at all. It seems strange that a budget camera doesn't show banding but the GH2 does regardless of the settings. I believe I understand the sync differences that cause the banding but don't understand why I can't get rid of it on the GH2. Example footage here: GH2 banding: [media]http://www.youtube.com/watch?v=v1Q1D1QDMdk[/media] DMC no banding: [media]http://www.youtube.com/watch?v=ehLH82zGYXM[/media] So my question is, does anyone have experience of successfully shooting LCD screens on a GH2 or other DSLR type camera? Am I expecting too much or perhaps doing something wrong - maybe there's something I haven't tried? Thanks for any advice. Gareth