GH2 official discussion thread

This looks promising, although the mud in the first wake shot (around 2:00) is pretty bad. Have to take into account that he used a "pre-pre-production" GH2.
 
I haven't read all posts but what nobody has covered yet probably is the push AF on the GH2 which I find a great advantage. I don't like to use AF full time but manual focus can be pita sometimes or there's just no time and push AF is only possible on the GH1 by operation two buttons at the same time. I find the sensor crop (1 on 1 pixel) another huge advantage; get larger DOF when needed and I trust Pananonic to be capable to improve the image quality and get rid of the mud and I also trust them to listening to us and come with an firmware update that enables FHD 25fps. So in short, I'm happy and I'm going to pre-order it. My two hackable GH1s will be for sale soon.
 
tflak said:
This looks promising, although the mud in the first wake shot (around 2:00) is pretty bad. Have to take into account that he used a "pre-pre-production" GH2.
Click to expand...

That was noticeable, really, but as he wrote:
"I used the FM 'share' and exported to HD movie (H.264 based) before uploading to Vimeo"
I believed it could be the H.264 conversion... anyway, if this camera could also be hacked in the future, that would be good news...
 
This has already been gone over here, but is there any work on how the GH2 will improve on JELLO. I understand it is unavoidable with CMOS but, any improvement will help. 1080/24p in GH1 had a hard time with this but 720/60p did well enough hand held still looked good.
 
JerryB said:
This has already been gone over here, but is there any work on how the GH2 will improve on JELLO. I understand it is unavoidable with CMOS but, any improvement will help. 1080/24p in GH1 had a hard time with this but 720/60p did well enough hand held still looked good.
Click to expand...

It is not unavoidable, it's just that no one has designed a global shutter with good active pixel quality yet (or at least not shared with us). Nothing in the electronics makes it undoable though, likewise, CCD can be designed without a global shutter as well :)

I'm a CMOS engineer (not optics though) so I am familiar with the technologies and digital logic portion of it (and enough analog to understand what has to be done).
 
FWIW I just got back from the DVexpo here in Pasadena and talked with Jan at the Panasonic booth about the GH2 and she was telling me that she doesn't know much about the camera but thinks that the aliasing and moire issues will still be in the GH2. She said because the resolution of the chip is too great. And I said okay but the AF100 has the same chip and she replied yes but the AF100 has a built in optical low-pass filter to fix this problem. She didn't seem to think software could fix the issue.

On another note I checked out the new 3D camera they are releasing and it was really amazing. Seems a little ahead of it's time, but it was fun to mess with and view 3D video through their $10,000 monitor.
 
itsdonny said:
FWIW I just got back from the DVexpo here in Pasadena and talked with Jan at the Panasonic booth about the GH2 and she was telling me that she doesn't know much about the camera but thinks that the aliasing and moire issues will still be in the GH2. She said because the resolution of the chip is too great. And I said okay but the AF100 has the same chip and she replied yes but the AF100 has a built in optical low-pass filter to fix this problem. She didn't seem to think software could fix the issue.
Click to expand...

New OLPF can completely fix the issue.
As I said, it require small firm and order to make custom OLPF in China :-)
I hope that someone start doing it.
 
http://www.optics-online.com/lpf.asp
Relevant part for your question: "OLPFs are made of several cemented layers of optical quartz material. An IR cut-off coating and anti-reflection coating are applied to the external surfaces. If the IR cut-off filter type is absorptive, the IR glass is inserted between the quartz layers."
 
So this filter could consist of something that could be mounted between the camera and the lens? And now we're talking about IR anyway, what would it take to enable a GH1 or GH2 to work with IR lighting for example nighttime wildlife photo/videography?
 
RieniO said:
So this filter could consist of something that could be mounted between the camera and the lens? And now we're talking about IR anyway, what would it take to enable a GH1 or GH2 to work with IR lighting for example nighttime wildlife photo/videography?
Click to expand...

I'm not certain, but this might be what you're looking for:
http://www.sciencecenter.net/hutech/irphoto/index.htm
http://www.hutech.com/AstroCamera.htm

Note they modify GH1 cameras, so maybe they'll modify the GH2 when it becomes available.
 
What obstacles do I get into if I use this 24p-Camcorder in Europe as sole camera (no mixing of footage)?
 
I have a caprock, it doesn't work more often then it does. But when it does, it does well.

One thing you might consider, when the AF100 comes out and authorized service centers can get parts, I imagine one could swap the OLPF of the AF100 into a GH1. I know people have tried doing this with a t2i, there just wasn't an off the shelf OLPF that had the rights stats for the t2i's sensor.

You'd lose basically photo mode and the crop mode would also be useless, but you'd get at least the moire/aliasing protection of the AF100.
 
Some really outstanding high ISO image samples here. If the GH2 ISO 3200 is really usable for video as opposed to the GH1's limit of ISO 1600 then the zoom lenses might actually become interesting despite their small apertures.

http://www.grafika.cz/art/df/hands-on-preview-panasonic-lumic-gh2-2010.html

ISO 3200
http://www.fotografovani.cz/images4/foto_panasonic_gh2_hands-on_ukazky_iso_a_2010_6.jpg

foto_panasonic_gh2_hands-on_ukazky_iso_b_2010_6.jpg


ISO 6400
http://www.fotografovani.cz/images4/foto_panasonic_gh2_hands-on_ukazky_iso_a_2010_7.jpg


 
Those samples certainly look promising but I think it will be wise to reserve judgement on the sensors performance until we see high ISO shots taken in low light levels rather than broad daylight.

FPN noise levels certainly seem to be a non-issue in these samples compared with the GH1 at this stage....this was the GH1's achilles heel and at times I was shocked at just how bad this problem could be...especially in low light, high ISO photographic exposures of more than 1 second - in shots produced under warm colour balance artificial lighting like sodium vapour lamps it was just horrendous. My D700's IQ is simply in another universe compared to the GH1 under these challenging conditions.
 
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