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Warp on Whip Pan


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#1 Caroline Shimper

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Posted 06 March 2010 - 02:40 PM

I'm shooting a video on the 5D Mark II but have noticed with anything like a whip pan that there is serious warping that occurs. Is there a way to avoid getting the warping that anyone knows of?

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#2 Brian Drysdale

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Posted 06 March 2010 - 03:07 PM

That's the rolling shutter effect. You really just have to limit the speed of your pans in order to avoid the "jello cam" feature found on all the DSLR cameras. That or use a video camera with a CCD sensor for your whip pans.
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#3 Chris Keth

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Posted 06 March 2010 - 03:26 PM

The only thing you could do is turn the shutter speed up, but that has other effects on motion that you probably don't want on either side of the whip pan.
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#4 Chris Millar

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Posted 06 March 2010 - 03:36 PM

You'l get that effect on quite a few cameras, Sony EX1 and EX3 for instance both have cmos sensors prone to rolling shutter - film cameras aren't immune themselves, in fact, it is where the term came from ;)
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#5 Emanuel A Guedes

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Posted 06 March 2010 - 08:20 PM

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It does seem the rolling shutter is not Canon's invention but was already creatively used somewhere in 1913. Credits for Jacques-Henri Lartigue.
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#6 Bruce Taylor

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Posted 06 March 2010 - 09:35 PM

The lean you see in the car is from a focal plane curtain shutter at a high shutter speed (a moving slit passes in front of the film), not sure if it's really the same as a rolling shutter, but the effects are certainly similar.

Someone in England has made a software plug-in for FCP to correct this issue. I saw it mentioned in the Konvas.org discussion list, but I can't remember the name of it, you might look in their archives and see if you can find it.

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#7 Caroline Shimper

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Posted 07 March 2010 - 05:26 PM

Thanks everyone for your helpful replies. I'll take a look and see if I can find the plug in Bruce (and share if I do). Thanks for the picture Chris ^_^ and Emanuel (credits).
I suppose if I want to do something akin to a whip pan without the warp I could simply pan slowly and speed up the footage in post. If I needed the actors to appear normal speed in the whip pan, I could simply direct them to slow down too.
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#8 Phil Rhodes

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Posted 07 March 2010 - 05:52 PM

Further to earlier replies, yes, that's an intrinsic problem with Canon DSLRs. And Nikon DSLRs. And Sony EX series cameras, and Red, and cellphones, and...

... it's a pain.

The plugin you're talking about is The Foundry's Rolling Shutter.

P
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#9 Ram Shani

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Posted 27 March 2010 - 08:47 AM

BTW

working with higher shutter speed make the rolling shutter worse
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