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Canon XL and GL Series DV Camcorders
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Old December 10th, 2007, 04:49 PM   #1
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Generating a blur

I have a unique opportunity to film a series of LEDís that form images while moving.
Any suggestions on how I could capture this? It would be similar to a blur trail as a vehicle passes.

Thanks to any and all,
Bill
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Old December 10th, 2007, 06:27 PM   #2
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Hi Bill, welcome to the forum.

Thing is, it might be more of a post-production effect (in editing) rather than something done to the camera. The thing about the tail lights on a car is you get that effect on a still camera when you leave the iris open for a certain amount of time, basically recording action to one individual frame. Can't really do that with video. Someone might prove me wrong here, though. :)

What exactly are you shooting? Something big? Small? That might give us a better idea.

Jonathan
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Old December 11th, 2007, 07:48 AM   #3
 
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Bill, slow down the shutter speed to 1/8 second and that should give you some smear, not as much as in some photographs (some of those shutter speeds are measured in seconds).

As always "experiment."
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Old December 11th, 2007, 08:07 AM   #4
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Thanks Jay, I'll start off around the 1/8 speed and go from there.

The technology that Iím filming is completely new and creates a fun challenge to capture it with the XL2. Iíll post a couple of pictures of the finished film strip and how the motion trails come out.

Bill
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Old December 12th, 2007, 05:37 PM   #5
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Jay's got a good idea. I haven't tried it, but I'm wondering what it does to picture quality, as when I take the shutter slower than the FPS (ex: 1/24 at 60i), then the movement gets extremely "stuttery", blown out, and hard to follow. Then again, you'll probably have the camera on a tripod performing a static shot, right? So it might work. I'd be interested to hear what happens. You learn something new every day.
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