Honestly, when I was mixing GH2 and HV30 footage (with the HV30 having shutter at 1/48 vs 1/50 on the GH2 for the shots I am referring to) it was not a difference that leapt out at me. I am not saying it isn't there for other people, but it was not an issue on that video at least.

I've seen it where some external monitors seem to have more of the strobe while some others do not.

It's true that the rotating shutter from analog film looks a bit better than the electronic ones. That's why these folks are developing the Tessive shutter: http://www.tessive.com/home/time-filter

It might be the fact this issue show stronger if your footage is sharper... however also still wonder if there is something strange with this cam as well. Problem is that its really hard to measure... would love to see some side by side paning test with red and other high end cams.

Original topic

http://www.personal-view.com/talks/discussion/comment/8464#Comment_8464

Blur? Just slower pans ;-)

Folks, this issue has been with us since movies were shot in 24 fps and will go away when we switch to 48 fps!

Why would you want to blur your beautiful images from the GH2 to control this? Follow the panning rules from the American Cinematographer's Manual and you'll be OK.

Plus, with the narrow DOF we can get from any large sensor camera, whenever you are doing a guided pan/track on a moving object or actor, take care to blur the background. I'll help a lot.

RED cameras exaggerate them even more. It's sharpness. If you want something soft, get a 5D or 7D ;-)

Guys, it is time to shoot at 60p :-)

Or maybe 16mm film.

Yep, silver halide doesn't wait around. As soon as a film camera's gate opens to fast movement outside, light starts painting those beautiful blurry smears across that emulsion.

from Wikipedia: "The primary reason that cinematographers adjust the shutter angle is to control the amount of motion blur that is recorded on each successive frame of film. A tight shutter angle will constrict motion blur. A wide shutter angle will allow it. A 180° shutter angle is considered normal. ..Tight shutters create a stuttering stop motion animation look.."

http://en.wikipedia.org/wiki/Rotary_disc_shutter

@Vitaliy_Kiselev @nomad

If it's the case that the camera can't get its shutter open early enough or hold it open long enough to blur the motion, then just throwing higher fps at the problem isn't going to be the answer.

@balazer If you can reproduce this stutter yourself, please try looking at consecutive frames for blur. If it's not motion-blurred (e.g. smeared laterally in a pan), the shutter may well be set to 50 but you're not getting 50. A cyclist travelling at 20 kph will move 10 centimetres during that exposure and the smear should record that movement.

@ everybody

We need testers here - one thing at a time. Task 1: to examine consecutive frames of stuttering 24p footage for blurring. [The previous thread on this topic got bogged down with valid but piecemeal tests, opinion & anecdote].

The first one to win a "Dr Karl Triple-J fun-pack *" for experimentation has been @mo7ies . (thanks!)

* Australia's Dr Karl (AKA "an answer looking for a question") answers listeners' science questions on radio 2JJJ and gives token prizes for real experimentation. - http://en.wikipedia.org/wiki/Karl_Kruszelnicki

Yes indeed, either the cyclist or the background gets blurred. So @balazer, have you looked at your stutter shots, frame-by-frame yet? Personally, this consistently stuttering footage, visible in whatever viewer it's played on, is something I've yet to reproduce. [what I do get is momentary glitches; another thing entirely]. My current shots show quite even motion-blur. So I'm afraid I don't qualify for this experiment!