avoiding flicker when videoing a computer monitor at DVinfo.net

Wolf Niederhoffer · April 5th, 2004, 08:13 PM

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

Rob Wilson · April 5th, 2004, 08:45 PM

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.

Nicholi Brossia · April 5th, 2004, 09:26 PM

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.

Bill Ball · April 6th, 2004, 03:13 PM

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.

Andre De Clercq · April 7th, 2004, 03:32 PM

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)

April 5th, 2004, 08:13 PM	#1
Wolf Niederhoffer Tourist Join Date: Apr 2004 Posts: 1	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

April 5th, 2004, 09:26 PM	#3
Nicholi Brossia Major Player Join Date: Jun 2003 Location: Oklahoma City, OK Posts: 389	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. __________________ Nicholi Brossia

April 5th, 2004, 08:45 PM	#2
Rob Wilson Major Player Join Date: Dec 2002 Location: Flagstaff, AZ Posts: 473	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.

April 6th, 2004, 03:13 PM	#4
Bill Ball Major Player Join Date: Jan 2004 Location: NEW JERSEY Posts: 216	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.

April 7th, 2004, 03:32 PM	#5
Andre De Clercq Major Player Join Date: Sep 2002 Location: Belgium Posts: 804	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)