View Full Version : does the improved bitrate fix the jello effect at 1080?
06-19-2010, 11:25 AM
720 pre-hack is pretty good about the jello effect. i would imagine 720 post hack would be at least as good. i've never really used the 1080 setting because of the jello, and that i do a lot of handheld. but what about 1080, post hack?
are there any samples out there to compare?
06-19-2010, 11:28 AM
It won't fix the skew issues unless you can change the read/reset speed of the CMOS chip. I'm not sure if that can be done via a firmware update or hack, but as of now, there is no change in the skew or jello (not that I have noticed). I actually haven't really seen a problem with the skew.
06-19-2010, 03:35 PM
what about 720p post hack? i'm assuming the jello / skew would be the same as pre-hack?
and for the record 720/24pN does exist with the hack, right? is it just a 2x crop of the 1080? i remember reading that.
06-19-2010, 03:44 PM
Yes, the skew is the same.
720/24pN does not exist without the hack. Without the hack, the GH1 could only do 1080/24p and 720/60p.
The 2x crop factor your thinking of is when using lenses on the GH1. for example, the kit lens is 14-140mm, but on the GH1, it actually becomes 28-280 (35mm equivalent). If you wanted to get the same field of view on the GH1 as, say the 5d MkII, you would put a 50mm lens on the 5D, but a 25mm lens on the GH1. It just means that the GH1 doubles the focal length of lenses you attach.
06-19-2010, 04:00 PM
i know that. i thought i read that the 720 post hack image was generated by cropping the 1080 image, further zooming, beyond what the 4/3 sensor does.
06-19-2010, 04:05 PM
might be, or could just be scaling. I have no idea. i don't shoot 720p. Mostly 1080.
06-19-2010, 04:22 PM
guys this guy put a video today on vimeo , he said to his eye the gh1 stutters in motion when shooting 24p even after the hack, i sometime thought about that and said to my self there is too much jitter -stutter that is not a basic motion blur, do you guys agree or think this is just a matter of him panning way too fast in 24p? thanks
06-19-2010, 04:29 PM
If you don't know how to pan correctly then you can't complain about the results. That is a very amateur pan if anything. You have to now what the heck you are doing to become an "expert". The same goes with jello and skew in 1080p. If you really know what you are doing you will know how to avoid it without much problem.
06-19-2010, 04:39 PM
Skew can be used in a cinematic way and used for a purpose, however, if you move the camera cinematically (jib, dolly, steadicam, etc.) you can avoid skew and strobing in most situations. Learn to move and operate the camera correctly, and you can create that effect when you want, or avoid it when you want, simple as that.
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06-19-2010, 05:38 PM
everyone says this. but intentional, fast, and precisely storyboarded camera movement is a style in and of itself, and in no way indicative of 'amateur' video. if the camera can't hold up in those conditions it makes a difference. maybe only to people who shoot in that style, but its important none the less.
06-19-2010, 06:01 PM
Every camera that shoots 24p can hold up to it. The things that specify is a camera can "hold up" or not would be things like resolution, color space, compression/format, recording medium, etc. Frame rate is standard and doesn't have anything to do with it.
Try panning while following a subject (try to keep the subject in the same part of the frame). Your eyes will ignore the strobing more easily when your following a subject rather than shooting static objects and just whipping them around the frame.