Does the GH2 exhibit any aliasing?

F

Filmkid2003

Well-known member
Does the GH2 exhibit any aliasing? I know it supposedly doesn't exhibit any aliasing in ETC mode. Does the camera exhibit any aliasing in regular recording mode?
 
Yep, it does.

It seems to be the same amount as the GH1 exhibits, but because the image is sharper it seems slightly more severe (nothing like the canons though; it's B&W so it's not nearly as bad). Still the best DSLR on the market regarding aliasing though.
 
Yes, but, like the GH1, the aliasing occurs more on vertical lines than horizontal (like the canons). That's a benefit as we live in a more horizontally oriented world. Also, we had the GH13 and now the GH2 and I'd say the GH2 exhibits considerably less aliasing than the GH1.
 
Matthew P said:
Yep, it does.

It seems to be the same amount as the GH1 exhibits, but because the image is sharper it seems slightly more severe (nothing like the canons though; it's B&W so it's not nearly as bad). Still the best DSLR on the market regarding aliasing though.
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Not sure this is accurate. Seems the other way around.
 
The GH2 aliasing appears worse to my eyes... I would turn the sharpness all the way down. This is of course comparing it to hacked GH13. To a regular GH1 the GH2 is far superior of course in all respects.
 
Thanks, guys. I should be getting my GH2 today. Blackout, I wish I had your magic "Made in Japan" GH13! I am in the same boat as you. I am filming a short on my GH13 (just one though, not three cameras... at least until I get my GH2) with no external monitoring screen and no crew... just one guy who either holds the reflector or booms the mic depending on the shot. I also have learned to work fast and adapt by shooting this way. I'm not saying I wouldn't rather have a complete crew and a HDMI monitor but, I know if I can shoot with a bare bones setup like this, then I will have an even easier time shooting with more equipment and a crew.
 
You'll be fine with the GH2 man. Most people don't even see the crazy a$$ crap I see I'm a nut job. Just make some good stories with that little GH2 and if you learn your stuff and are smart you can make enough money easily to buy the AF-100, and then you can take over the world. There is a "take over the world" button hidden in a secret menu on the AF-100.

The only thing that sucks about the af-100 is that it is going to be 'THE camera' that everyone shoots with now so I kinda lost my little secret ninja advantage with the GH13 hack in New York. Damn. But still.... just because you own a camera doesn't mean you know how to use it... or so says some people's girlfriends (not mine of course).
 
Have to differ the moire aliasing looks worse on my GH2 than the 550D/T2i i had before, i like nearly everything else better though on the Pana.
 
The aliasing is worse than the GH13 but I wouldn't say it's worse than thr 550D/T2i! No way! Anyway just dial the sharpness all the way down that helps a little.
 
Perhaps pal suffers worse,24P is just a no go so i have been using 50i which is a lot better regarding the M and A but worse than the canon i had,today i filmed with 720P and will check it tommorrow but it looked similar to 50i as it recorded.
 
How on earth is Moire and aliasing worse on your GH2 than the Canon you had?!? That goes against every single observation I have made myself, heard commented or read online.
 
flinty said:
http://www.youtube.com/watch?v=XJAeQfledmI

http://vimeo.com/16582939

In other than 24P its not bad but still more than on my 550D,that is how on earth moire is worse.
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Definitely see some Canon style aliasing on the roof at 1:12, but I feel it looks generally pretty good considering all those treacherous repeated patterns with bricks, walls, etc. However sometimes I have the feeling the video is a bit soft and there are definitely passages where nothing seems to be in focus (1:01). Almost as if there was a Caprock filter over the lens. Could just be the Vimeo compression though.
 
yoclay said:
Definitely see some Canon style aliasing on the roof at 1:12, but I feel it looks generally pretty good considering all those treacherous repeated patterns with bricks, walls, etc. However sometimes I have the feeling the video is a bit soft and there are definitely passages where nothing seems to be in focus (1:01). Almost as if there was a Caprock filter over the lens. Could just be the Vimeo compression though.
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yes that was a 720P render this a 1080P one http://vimeo.com/16275897

the GH2 24P certainly shows it

http://vimeo.com/19291613 some GH2 50i footage
 
In 720p and 50i modes there appears to be more aliasing. Similar to the Canons in 1080p mode I expect, but better looking because it's B&W.

What we've learned is that the GH2's 720p mode beats the Canon's 1080p mode. That's just LOL.
 
We tested the aliasing and moire on the GH2 and AF100 the other day. Both cameras exhibit some artifacts in extreme scenarios. However, they are both FAR better than just about any other camera out there.

The key to reducing the artifacts is to turn down Detail on the AF100 and turn down sharpness on the GH2. This will greatly reduce percieved resolution though.

Here are some test shots we did with both cameras. There are also some real world brick and shingle shots at the end of both clips. These were lossless joins and you can download the original videos as well.

GH2
http://vimeo.com/20058475

AF100
http://vimeo.com/20049866
 
the main claim to fame of the GH2 is its resolution/sharpness greatly reducing that defeats the object IMO but i have been trying -1
 
My 60D would have freaked on these tests. Love it for timelapses, shallow dof and low light, but grateful for a gh13 in the bag.
 
The ultimate aliasing / moire test shot I have done on my GH13 is my laundry scene which starts at about 1:20 an goes to 1:40


I pull focus to every horrible pattern, horizontal line, vertical line, tiny detailed patterns and lines (I hung those ugly clothes up on purpose) and the GH13 passes with flying flying colors. Yeah there is a tiny tiny bit of aliasing but almost none, only the most HARD core of pixel peepers would spot it and they would have to have their face up to the monitor.
 
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