I only use completely manual lenses and I see it pretty easily. It definitely seems to vary from camera to camera, some are better than others. If you have a bad one, see if you can get it fixed or work around it.

If you do that, could you try to shoot something with the current camera and then recreate the shot/lighting with the next one? I don't think we have confirmation on the differences between sensors, that would be very helpful as a resource. I am going to try to do this myself in the next week with two GH2's.

@nomad: That's a good idea. Any guidelines? Thoughts? Where do we upload?

Some superb ideas here. I like the idea of comparing like for like. I am putting together a video showing the problem in various shots I've taken. In fact, every time I've gone out to shoot at 1/50 I've had the issue in various places. If I do return I'll certainly ensure I get footage of a fixed test that I can then recreate.

I'd be happy to participate.

Interesting because when I tried that I could see it clearly. Will test again but it showed up without having to do anything.. hmmm. Also on mine it'll show up consistently when shooting almost anything is reduced light. Wonder if it's worse than other's.

** EDIT: I just tested with the lens cap on and couldn't see it either but then I found a way to get it to show immediately. Just take the lens cap off very slowly and move it away from the lens a little bit so that some light is allowed in - that should show the line really clearly.

Here is a video to show it:

Watch full screen in 1080p if you can. You might need to click to watch it on YouTube to enable full screen mode.

I suppose for me it's knowing the degree to which it affects different unit's. If all units are the same and mine is no different I won't return my cam and get a new one but if mine is showing it worst than some than I think I'll have to swap it. Do love this camera but just want this resolved so I can get to enjoying it. ;)

Would be good to know what other's see with their's.

may be a silly question - but has anyone seen this issue on the out-of-the-box GH2? i'm seemingly unable to un-hack my camera this morning as i wanted to quickly test it on the vanilla version of the firmware...

hwy guys seems like alot of people havin this "Line" issue, including me, i noticed it a few days ago and thought the new lens firmware is to blame, so i did tests with different lenses including Canon FD mounts, the problem remained. than i went to official firmware, old and new , nothing worked. Tried to clean sensor, refresh pixels... nothing worked. Than i went to my old footage before i hacked my GH2 and i managed to find the same issue on some shots, i just never notice it before. :( So the bottom line is if i keep this camera i'll shoot at iso 640 max at 1/50, if iso goes up 1250...... ond so on i shoot at 1/40 or even 1/30 shutter speed. at 1/40 line moves down where i can live with it and at 1/30 there is no line. hope it helps to those who just discovered and super frastrated with it like i was. :)

Check all REC modes too and report back here.

@JamesAllenVisual just go for an exchange I noticed that not all of the GH2 are the same. Out of the three I own I can easily hack two whereas the third one is always giving me problems.

@Tommyboy Thanks for that. Have you tested the band stripe issue over all 3 of your cams as well to see if they differ at all? I would love to know the results if you have.

@kanintesova Ah I can feel the pain there in going the service centre route - I have a feeling they would probably say there isn't an issue as it's pretty much a hardware flaw - aka a 'feature' - but you never know..

@Tommyboy Interesting that you only see it on 12800 iso. I see it on almost every shoot as soon as it's not perfect light regardless of iso.