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Canon XL H Series HDV Camcorders
Canon XL H1S (with SDI), Canon XL H1A (without SDI). Also XL H1.


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Old September 25th, 2006, 12:38 AM   #1
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Motion Blur or 3:2 pulldown

Hey guys, I've noticed on occasion I get a blurry motion if I have a locked down shot and a fast moving object. Almost a ghost-like image (1 image becomes 2). I output all my 24 F footage through firewire, so this cannot be a 3:2 pulldown issue. Is this just typical HD motion blur? Any thoughts? I've included 2 samples.
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Motion Blur or 3:2 pulldown-blurexample.jpg   Motion Blur or 3:2 pulldown-blur2.jpg  


Last edited by Brad Schreiber; September 25th, 2006 at 01:53 AM. Reason: Add sample pic
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Old September 25th, 2006, 02:20 AM   #2
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Hi Brad. Looks like motion blur to me, especially the second pic with the moving head. You can see the streaks formed by the eyes sweeping which you wouldn't get with interlace or pull down artifacts.

Video is more forgiving of motion blur than stills, but if this comes out too blurry on the actual video, I think you will need a faster shutter speed (or a subject that doesn't move so violently).

Richard
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Old September 25th, 2006, 02:29 AM   #3
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Whew...

Thanks Richard, makes me feel better. I'l deal with a little blur here and there, but a 3:2 pulldown removal on 17 hours of footage is, at this point, a no-go. Thanks again.
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Old September 25th, 2006, 04:10 AM   #4
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Hi Brad. What are you using for editing? Some editors (e.g. Vegas) do the pulldown removal on the timeline, so you don't need to go through a separate step to do it. Does your NLE have the option to show you the clip properties? That should tell you whether there is pulldown or not.

Regarding the blur, hopefully it's not too bad for most of the footage. If you're already editing 17 hours of material, I guess it's too late to talk about faster shutter speeds!

Richard
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Old September 25th, 2006, 03:36 PM   #5
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Clip Properties

I'm cutting on Avid Xpress Pro 5.5. My clip are DnX 220 running at 23.98 frames per second. Thanks again for the help Richard, it's helping me sleep better!
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