Slight choppiness in 24p

ccastro

ccastro

Well-known member
Does anyone else have this problem, I'm shooting in 24P and using the 1/50 shutter speed and no matter how slow I move the camera on pans I still get a slight choppiness in the video clip. I have to go to almost no movement before it goes away which defeats the reason for a pan.

I have 2 lenses I use primarily, L series 70-200 mm and 24-70mm.
I Have tried this at its widest being 24mm and still theres choppiness.

Is there a way to avoid this ?

I see other peoples videos with much faster pans in it and no choppiness.

Is there some setting I'm missing?

I don't see it in tilts, just pans.

Thanks
 
I don't have a solution, just an idea to try. Go to 1/40th shutter and do some panning tests. Stutter is usually because there's not enough motion blur to help the eye see it smoothly. Adding more blur with a slower shutter may help.
 
Yeah I've tried 40, and 50, I used to shoot only in 60 until I heard about 1/48 setting for 24p. I have always had this problem for some reason.
 
What CF cards are you using? Could be dropped frames from too slow of a write speed. The datarate increases when there is camera movement.
 
Hi,

I'm using ScanDisk Extreme CF card 60MB's 32 GB card.

Is that fast enough?

I used to use 30 MB's and had the same problem.

thanks.
 
have you shot 24p before ?

The leap down from 30 was suprising for me - now I feel sickly if I watch 60 - a year ago I couldnt see any of it

Keep those pans smooth and slow - 7 seconds for something to cross the frame is the 'rule'

S
 
Yes Morgan I have, I have an Panasonic HPX 300 and it also has 24P capability and it doesn't react the same way, NOT Even close. I will try your 7 second rule, however I have done these pans at a snails pace and I still see it, just a lot less. I will try and shoot an example later today.
 
Well Ive never shot 24p on a camera better than the EX1- it jerks on that but maybe less - so possibly dont know what it should really look like (film)

The EX1 is smooth sea sick with 50i so its certainly a charateristic of low FPS progressive

I would agree that the canons are a bit weird, maybe its something to do with the way the shutter refreshed (in a rolling manner)

your monitor could play too - CRT seem smoother than LCD but if you are doing side by side with the panny everything else equal it would be interesting to see..

S
 
Is the choppyness in playback on the camera or in post on your computer?

I find when I shot on the 5D that it looks smooth on the camera and then watching it in h.264 on the computer it looks kind of choppy.
I convert my h.264 files to ProRes 422 files and when I bring it into fcp it looks much smoother.
 
I see it in the monitor as I'm panning and although I convert to prores it is still there as well. It only happens on pans, Tilts are not a problem. I'v estopped doing it altogether to avoid it but from time to time I do a pan in hopes that I get a surprise, I don't. LOL
 
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