GH2: Blue horizontal banding?
- Thread starter cordvision
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Pietro Impagliazzo
Well-known member
If this is all I'm gonna have at ISO1600... I'm sold on the GH2.
GH1 is much worse in ISO800 already IMO.
GH1 is much worse in ISO800 already IMO.
kainekainekaine
Well-known member
Got my GH2 Pal UK, it has the same band problem as Japanese, US models. Goes away at 1/25th - 1/30th, appears after that. I think tele mode has it slightly but not as much. Wonder why it disappears at 1/30th. It seems completely clean also before you hit record, it only shows when you hit record. Shows when using HDMI monitor too.
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memphishills
Active member
What I've noticed with my model (and show in my video, is that the bar moves down the frame and eventually off of it once you hit 1/30. So I think it might have something how it's interpolating down or something like that (I really don't know enough about the technicals of how they pixel bin and all that stuff.
memphishills
Active member
Wow, you got HDMI recording to work??? Details, please! Footage !!!
))))
Unfortunately my editing rig crashed later that night, and I had to restart from scratch, lost the footage. I'll hopefully be recording something today (Saturday) and I'll post when I have some footage to show. As far as details, it wasn't hard, plug in camera, hit record, screen is cleared, capture with a capture card (in my case an MXO2 mini max).
kainekainekaine
Well-known member
Mine acts exactly the same.
You should try something, try hitting record when it's at 1/30 shutter and then after recording raise it to 1/60. I found on my GH13 that it helped reduce banding. More so than if I just hit record when my shutter was at 1/60.
kainekainekaine
Well-known member
Just tried this. No luck. Shoot at 1/30th, iso 3200, underexpose, raise to 1/50th from 1/30th and you can see it pop up as soon as you roll the shutter up, with each shutter change the band moves higher.
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kainekainekaine
Well-known member
Its not really visible at stanard isos as far as I can tell.
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Banding at 3200 iso? Well we can't have everything.
Is it obvious at 1200 - 1600 iso?
kainekainekaine
Well-known member
Banding at 3200 iso? Well we can't have everything.
Is it obvious at 1200 - 1600 iso?
After a quick test 1600 I can see it. 800 not so far.
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roei z
Veteran
hmmmm... hate to admit it but i'm a bit relieved knowing that everyone will have a very good reason to push Panny for results. (i sent them some kind of global help center message a week ago... expect 2013 answer..)
To be honest, I had a job seeing the banding - BUT I was very surprised at the amount of chroma noise on the faces of the subjects (see 1.40 through to 1.49)
That's the sort of unpleasant blue colour blotching that I found on my first GH1, but which is 99.5% absent on my second one.
I saw the same chroma noise in some of the Photokina test footage - but, of course, they were just pre-production units. No excuse for the same defect in retail stock, imo.
I really *am* starting to believe that Panasonic have sent out batches of 'unfixed' GH2's, simply to meet a Christmas deadline.
If I had a twinge of regret about cancelling my GH2 just before it was due to be posted, it's certainly gone now.
Edit: looking again, it's a mess of chroma noise on every surface that isn't brightly lit - furniture, faces, you name it, it's alive with colour noise, and it doesn't look particularly underexposed to me.
I'm strictly amateur night, and I wouldn't use iso 3200 if that's the result. What do semi-pro/pro's make of it?
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Hey Framerate
I've just shot an ISO 1600 clip (very crudely as normal), and I can confirm also the slightly less exposed band. It's easy to spot in scenes with very little detail; like a wall. And then it has to be underexposed a fair bit to show. Apart from test scenes, I really can't imagine many situations that would have me shooting vast areas of under exposed low detailed midtones.
Is it a problem? Sort of. Is it better than the GH1 I had? Hell yeah. I've uploaded the ISO 1600 clip, and in my eyes it's fantastically clean in comparison to what I've been used to. No vertical bands, no whispery horizontal bands, just fine noise that's under control. Frankly I'm amazed by its potential.
Here's the link to the clip: http://dl.dropbox.com/u/6121214/00030.MTS
I've just shot an ISO 1600 clip (very crudely as normal), and I can confirm also the slightly less exposed band. It's easy to spot in scenes with very little detail; like a wall. And then it has to be underexposed a fair bit to show. Apart from test scenes, I really can't imagine many situations that would have me shooting vast areas of under exposed low detailed midtones.
Is it a problem? Sort of. Is it better than the GH1 I had? Hell yeah. I've uploaded the ISO 1600 clip, and in my eyes it's fantastically clean in comparison to what I've been used to. No vertical bands, no whispery horizontal bands, just fine noise that's under control. Frankly I'm amazed by its potential.
Here's the link to the clip: http://dl.dropbox.com/u/6121214/00030.MTS
Not need to shout at me and get excited. This isn't DPR.:cheesy:
If you're happy, that's all that matters - it doesn't matter what I think, or what anyone else thinks.
Similarly, I made my own choice based on my best assessment of the situation - which is that Panasonic could have released a first batch of GH2's that they know are not quite right, simply to meet that psychologically important Christmas deadline.
That's only my opinion, and I could well be wrong - but it's what I think probable, and I based my buying decision on it.
You made a different choice, and it's certainly not for me to comment on it. I'm pleased that you're happy with it, and I hope it gives you a lot of trouble free enjoyment.
True, my GH1 was a croc in video with FPN, so it certainly was a no-brainer. I've admired the footage from your GH1 for a while, so I fully understand your reluctance to move from what is essentially a brilliant camera.
I personally think the conjecture is a little wide of the mark, but I'm willing to be wrong. I now have a camera which my GH1 should have been
memphishills
Active member
Ok looks like I'm out for showing captured footage. I'm new to this game, so either I'm capturing in wrong, or Panasonic is making it really hard, because I can't seem to nail down a framerate and all my captured footage looks like garbage. So I'll wait till someone a little more professional steps up to the challenge.
Sorry Guys!
True, my GH1 was a croc in video with FPN, so it certainly was a no-brainer. I've admired the footage from your GH1 for a while, so I fully understand your reluctance to move from what is essentially a brilliant camera.
I personally think the conjecture is a little wide of the mark, but I'm willing to be wrong. I now have a camera which my GH1 should have been
Don't misunderstand me - I want a GH2, but I (with a supreme effort, I might add:laugh
managed to curb my natural impulsiveness in order to see what happens.It's also true that if I hadn't landed the Harrison GH1 I would probably have gone ahead, regardless
I'll try and download your vid later - I did check, but it was 250Mb with a D/L speed of about 50 kbps
Hopefully the server might be a bit faster later on.BTW, I was being genuine when I congratulated you on your new purchase - and I really do hope that it proves to be a good cam. We are all dropping quite a lot of money on these things (particularly when compared to other electrical items, like a high end LCD TV, etc) and we have a right to expect them to be as good as possible.
BTW - dunno what you use for editing, but give Edius Neo a go (free trial) it's the fastest/best NLE I've used, and it leaves bloatware like PE panting in the dust. Well worth a trial.