GH2: Blue horizontal banding?

Was shot at ISO 200.

HVXguy: Making the breakthrough has nothing to do with the camera you use. You can make a breakthrough with a movie shot on an iphone. If you think it depends on the camera, you are just looking for a cheap excuse for not being a good filmmaker... I shot my last two films on 35mm and Red... does this make them good films? I wish it would ;)
 
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FelixGER said:
You´re mixing something up. I was reffering to the banding issue (the dark grey on), not aliasing!

@HVXguy: I just said that I can see the banding in these scenes, that´s all. Doesn´t destroy the film though...
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I cant for the life of me see any thing wrong with this video. The funny thing is, people complain about little things in video, but dont say anything about the big specs of dust, and little hairs that get stuck to film, Yes film is what everything else is compared to, but come on, it's not by any means perfect either. every camera has some sort of flaw. even the best film cams have issues at times. But for an eight hundred dollar cam, it's amazing. Im grttin a few of these instead of the af100.
 
maranfilms said:
Im grttin a few of these instead of the af100.
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I would get an AF100 (AF101) and one GH2. So you have someting to run around with and the AF100 for staged scenes. Don´t forget that the Af100 has Peaking (!) which is such a help when pulling focus!
 
cordvision said:
Was shot at ISO 200.

HVXguy: Making the breakthrough has nothing to do with the camera you use. You can make a breakthrough with a movie shot on an iphone. If you think it depends on the camera, you are just looking for a cheap excuse for not being a good filmmaker... I shot my last two films on 35mm and Red... does this make them good films? I wish it would ;)
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I have no idea. Do you have links to your movies? Are they for sale?
 
Isaac_Brody said:
Here's the problem:



:)

Here's the solution:

Lower ISO's and proper lighting.
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I was never asking for the camera to be a miracle worker, and I'm completely at piece with whatever the ISO noise is going to look like at ISO 3200 and such. What I am showing here in my testing in a technical issue with the sensors. This isn't about properly lit scenes and professional movie making, this is about technical problems with an electronic product.

Also keep in mind, that although you might be making hollywood movies, the better majority of consumers are not going to be doing that. And when they decide to point their GH2 at their daughter on stage at a recital, and the camera jacks the ISO up, and it's underexposed because its damn dark, their going to see this issue, and it becomes a problem.

But whatever, I guess people should just learn to carry studio lighting to every family event in the case that it gets dark out.
 
memphishills said:
I was never asking for the camera to be a miracle worker, and I'm completely at piece with whatever the ISO noise is going to look like at ISO 3200 and such. What I am showing here in my testing in a technical issue with the sensors. This isn't about properly lit scenes and professional movie making, this is about technical problems with an electronic product.

Also keep in mind, that although you might be making hollywood movies, the better majority of consumers are not going to be doing that. And when they decide to point their GH2 at their daughter on stage at a recital, and the camera jacks the ISO up, and it's underexposed because its damn dark, their going to see this issue, and it becomes a problem.

But whatever, I guess people should just learn to carry studio lighting to every family event in the case that it gets dark out.
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+1 - agree on "technical problem of an electronic product" !
 
memphishills said:
But whatever, I guess people should just learn to carry studio lighting to every family event in the case that it gets dark out.
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I just finished a 40 minute DVD of a one week trip in China. It was shot with a Panasonic Zs3 (p&s) and if you want to see technical issue with the sensors, look no further. However, for the intended audience, flares and spurious highlights do not mar their enjoyment. Indeed, nobody has mentioned even the most obvious ones. (And no, they're not being polite. If I bring it up, they say OK, but they look past them.)

The point is, when Jim points a GH2 at his daughter's performance, I don't think his audience is going to freak out over something that is very hard to see, if it appears at all. If Lisa is doing a documentary or a movie, then she will need to light her subjects accordingly to make a professional product.

Anything can be made to break. Everything has limitations. The art is to not break it and to work around limitations. We are all so stupidly spoiled by technology, we forget what can be done with these "miraculous" tools, and instead moan and complain about the smallest issues.

It's really tiring to listen too.
 
By the way guys. I did quite a few tests last night capturing hdmi to an intensity pro in prett terrible lighting and didn't see any banding. This isn't comprehensive yet, but if we see this continue it may indicate that the fault lies with the encoding.
 
I'm leaning toward that thought also...which simply means....firmware upgrade some time in the future. :)
 
farfromsubtle said:
By the way guys. I did quite a few tests last night capturing hdmi to an intensity pro in prett terrible lighting and didn't see any banding. This isn't comprehensive yet, but if we see this continue it may indicate that the fault lies with the encoding.
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However, when I was capturing with my Matrox card, I did get the band through capture, so...
 
stoneinapond said:
Anything can be made to break. Everything has limitations. The art is to not break it and to work around limitations. We are all so stupidly spoiled by technology, we forget what can be done with these "miraculous" tools, and instead moan and complain about the smallest issues.

It's really tiring to listen too.
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Then I guess I should just thank Panasonic for what they've made, deal with the issues and go on twiddling my thumbs, as apparently I should just accept broken devices for what their worth and never ask for problems to be resolved. Sounds like a reasonable plan.
 
memphishills said:
Then I guess I should just thank Panasonic for what they've made, deal with the issues and go on twiddling my thumbs, as apparently I should just accept broken devices for what their worth and never ask for problems to be resolved. Sounds like a reasonable plan.
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+1
 
In my opinion the problem is that the banding is more distracting than the other issues that other low cost cameras have. Unlike noise, blown out highlights etc., banding calls a lot attention to itself and it is hard to just overlook it. It's similar to color moire, which also stands out in a picture, and many here call a shot with a lot of color more ruined.

Most of us would call a shot with a 35mm adapter (spinner) in which the ground glass was not spinning as ruined, because it has a lot of distracting static grain. I feel the same way about static bands in my picture. Static bands that cover large parts of the picture are just not acceptable.
 
Just a heads up that this banding (in its multiple forms, as linked to on the first post) appears to be entirely fixable with some pre-processing ("pre" as in before you re-encode the clips for editing..)

I've seen the banding pop up in two circumstances myself so far: low light shooting at ISO 3200, mainly under fluorescent street lamps, and tele-extension mode shooting at ISO 160, where the issue is much more prevalent - and yes, the shutter speed was at 1/50th!

In both these cases, a moderate amount of temporal smoothing will get rid of the banding and the blue noise, and leave the rest of the image untouched. When watching the processed clips back you can't tell the banding was ever there to begin with. It's also a great way to clean up high ISO clips (seriously, the amount of detail hiding behind the noise is amazing).

I do this through Avisynth and a couple of plugins, but I imagine there will be other programs that can approximate the same effect.
 
memphishills said:
...I should just accept broken devices for what their worth and never ask for problems to be resolved. Sounds like a reasonable plan.
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Broken devices. You've got to be kidding. Talk about hyperbole.

And nobody is talking about not having problems resolved, but it seems that most of the problem occurs at the edge of the camera's performance. That's hardly broken. Annoying, yes. Workable - absolutely. Will it get fixed? Most probably.
 
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