GH2 GH2 24p or weird strobe effect

Hey guys,

For those of you that feel like your camera isn't exactly working right: What color is your camera? Not that it makes a difference but just for my own curiosity.
 
Rigby said:
Here you go. They all look about the same but they do indeed look different inside the evf, for what it's worth. I don't see any motion blur but whatever..... I can't do anymore tests because I'm sending mine back in a few hours.


1/125 http://www.mediafire.com/?v6qs6p30si1ljb1
1/60 http://www.mediafire.com/?vtearnho9i1i9v2
1/50 http://www.mediafire.com/?21ffrfxp1g3lld2
1/40 http://www.mediafire.com/?ddqizwe0cm261w2
Click to expand...


i'm examining at the moment.
it would really be very helpful if any "strobe/24p expert" with a lot of experience will have a good look at those. (Ian? Barry?)
i cannot get to any conclusion... this MIGHT be a specific camera defect. but i'm still not sure.
 
BTW - Rigby, THIS is where you live?? consider yourself a lucky guy, even if you're stuck with a defective GH2 ;)
 
Yeah, that's my front yard. Roei, I would urge you to send your GH2 back. Not sure where you got it. That's what I would do and did. I'm almost positive that there are some funky GH2 cameras floating around. Unless I've completely looked over something stupid, there is no other explanation. Hopefully we can put an end to this thread and everyone can get a decent working camera. If you think your GH2 looks weird make sure you act quickly and I would buy from a place that is easy to return to. I would be skeptical purchasing used units for a while and I've seen a few. I think there's one on Amazon now.

Once, again thanks to everyone for their help and suggestions. Good luck to all of you.
 
unfortunately i don't have the option of sending mine back- as i ordered it from Japan..
nevertheless i do notice a strange 'error' on each of your samples each time you stopped recording.. like a video 'glitch' on the lower part of the shot..
also, your lens automation seem to behave rather strange.
 
Roei,

You think he 24p is ok? Really? It's unusable and actually could make people feel ill. That's not ok. Luckily, I'm pretty sure my camera was messed up. I'm going to buy another gh2 and I'll get back to this thread with results.
 
Matthew P said:
Are you using Windows 7? It's easy to make a custom refresh rate (48hz) which will make 24p files look smooooth(er) (the time between frames will be constant, not variable as in 60hz). You'll most likely be blown away.
Click to expand...

Hey how can you do this? I have a 60hz LG monitor and while my 24p GH13 files and blu-rays look great I bet they would look even better and NEVER tear if i was at 48hz. How do you do it? I have an ati hd 4870 x2 but I can't see a way to custom set the hz.. it has a 24hz mode but my monitor doesn't support it.
 
hey Blackout, glad you're awake and reading this...
no, the 48Hz will be possible only if your monitor supports it. so no deal.
now pleeeaaasssee download those 24p strobic files and tell me what you think !
you watch 24p MTS files with media player and the 60Hz extra strobe looks fine?
so take a look at hose samples and compare them to your 24p motion..

danke shein
 
I have already chimed in on this. The GH2 looks like it has a higher shutter speed to my eyes. It does look stoby-er if that's even a word. I shoot with a 50 shutter outdoors and a 60 or 30 shutter indoors on the GH13 and it looks FAR smoother than the footage I am seeing here. I am playing it back in windows 7 media player which has an excellent avchd codec player.

Damn now I have to get a new monitor. I want a RGB LED one that supports all the custom refresh rates as well as has a SWIVEL mount so it can be used in portrait mode too. Portrait mode is EXCELLENT for web browsing and design and for making custom videos for clients who want a 9:16 ratio. Basically you shoot everything with the camera sideways. You see it all over stores like best by where that use portrait mode to show more if a person standing straight up in a shot. Yet... I am having a hard time finding a monitor with a swivel mount that supports portrait mode AND multiple refresh rates so you can easily do it rather than hackneyed doing it.

Any suggestions?

 
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ok, thanks... interesting.. i compared your ghostbusters MTS to some of the GH2's and the 'strobe' is pretty identical..
 
roei z said:
ok, thanks... interesting.. i compared your ghostbusters MTS to some of the GH2's and the 'strobe' is pretty identical..
Click to expand...

The ghostbusters clip is pretty old and when I first started playing with the hack...I hadn't perfected my settings yet. It also was shot very quickly and might have even been in.. GASP.. auto mode cause I handed the camera to someone else who was not yet trained (who is now my 2nd unit camera guy as well as gaffer). But at the time, he knew nothing about the GH1 so I have no idea what the shutter speed was on that. That clip was really just to show the incredible detail level post hack.
 
ok, so please, upload a recent perfect fluid 24p outdoor MTS so i could compare this strobe issue with my own eyes... ok?
thanks :)
 
I'm travelling presently .... just catching up with this thread. I'll try and post the footage I referred to earlier as soon as I get back home. In terms of settings, I'm in:
Creative Movie: 24P Cinema
Motion Picture - Rec Quality: 24H
Motion Picture - Film Mode: -2 sharpening
Motion Picture - Exposure Mode: M
Aperture (whatever) and shutter speed (1/50) are set manually via the thumbwheel. This is with an NTSC GH2.
 
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thanks Graham. glad some people can help me with this, as it seems i'm left alone :(
i use the same settings as you.
(you refer to the footage you claim to look perfect in term of 24p pan? interesting)
 
Cant we determin wether the refresh rate of the monitors in question is the problem, by reading the .mts in (to any software) as a simpathetic frame rate, 30, 25, what ever, if theres no strobing them we can eliminate a shutter speed issue??

JC
 
Jordan, you're on the right track, and i tend to agree with you,
but the fact is the might be a shutter issue with GH2 that cause more 'strobe',
and Blackout even claims his GH13 footage is a lot smoother.
 
just outputing a section that has been read in at 30 fps, ill upload a link and see if some anyone notices any more or less strobing. I think its removed it, fingers crossed it has... my monitor refreshes at 60htz.
If it has then the issue is will playback, not shutter speed... dont get to excited i could be wrong.
i think monitors play a big part in this... not a lot of stuff seems to support 24htz. Also whatever the video file, displaying 1920*1080 pixels is a ball ache for alot of computers.
 
this debate is a paradox :
If it's monitor hz, than EVERYONE would report the same look.
I agree with you that watching 24p on a 60Hz monitor will cause
A bit more strobe, so explain to me how come some people claim
Very strongly that they have footage that plays smooth on probably
The same 60Hz ??????

Someone pleeeeaase solve this!
 
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