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Old April 5th, 2004, 09:13 PM   #1
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avoiding flicker when videoing a computer monitor

any ideas for avoiding those thick lines going up and down the screen. I really need shots of a guy looking at a computer. I need a quick fix. Gotta shoot in a few days.
Thanks for any help
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Old April 5th, 2004, 09:45 PM   #2
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Wolf,

All depends on the camera you're using. Some have a "Clear Scan" shutter setting that will allow the cam to sync with the monitor. If you don't have that option, try using a LCD display vs. the CRT, no refresh on those.
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Old April 5th, 2004, 10:26 PM   #3
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Clear Scan is your best option if you have it. If not, you might try adjusting the refresh rate of the monitor. If you have a Windows machine, the refresh rate can be changed in the Control Panel under the Display-Settings-Advanced-Monitor tab (or similar depending on system version). This may not solve the problem, but it could make the video more usable. Just remember, you'll want to put it back (usually 60Hz) when you're done because some frequencies are difficult to view.
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Old April 6th, 2004, 04:13 PM   #4
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I found that changing my camera's shutter speed from 1/60 to 1/75 essentially eliminated the problem on a recent taping. If you dont have a clear scan option on your camera and can manually adjust the shutter speed, try that.
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Old April 7th, 2004, 04:32 PM   #5
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Allmost all modern cams can be set to a clearscan mode .See for PD150: http://www.bbctraining.com/onlineCourse.asp?tID=5160&cat=2781 (guide 3)
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