The problem of cinegamma at DVinfo.net

Miguel Lopez · April 8th, 2003, 12:30 PM

The problem of cinegamma is that when something is about to overexpose it does it very fast so the image is useless.

Has anyone notish this? check this www.macgregorcorp.com/chica.avi

Stephen van Vuuren · April 8th, 2003, 02:22 PM

That's by design, not a problem. See this link for more details:

http://www.adamwilt.com/24p/index.html#GammaSettings

Jason Rodriguez · April 8th, 2003, 03:12 PM

Actually, the problem is really easy to solve in post. Simply apply a curves filter to the footage, and make a nice knee from the highlights into the midrange-it helps a lot and basically solves the hard clips in the highlights problem. If you can't do any color correction in post though, and you're having problems with the highlights, then it's probably better to just shoot with one of the other three gamma modes. Hope this helps.

Jason

Miguel Lopez · April 8th, 2003, 03:22 PM

Could you draw me the curve?
thanks

Scott Osborne · April 10th, 2003, 08:51 PM

Try this like there is a great screen shot of the curve
http://www.dvinfo.net/articles/filmlook/broadway2.php

Scott
Infinite Reality Productions

April 8th, 2003, 12:30 PM	#1
Miguel Lopez Regular Crew Join Date: Mar 2003 Location: Madrid, Spain Posts: 187	The problem of cinegamma The problem of cinegamma is that when something is about to overexpose it does it very fast so the image is useless. Has anyone notish this? check this www.macgregorcorp.com/chica.avi

April 8th, 2003, 02:22 PM	#2
Stephen van Vuuren Space Hipster Join Date: Oct 2001 Location: Greensboro, NC Posts: 1,508	That's by design, not a problem. See this link for more details: http://www.adamwilt.com/24p/index.html#GammaSettings __________________ stephen v2 www.insaturnsrings.com

April 8th, 2003, 03:12 PM	#3
Jason Rodriguez Trustee Join Date: Mar 2003 Location: Virginia Beach, VA Posts: 1,095	Actually, the problem is really easy to solve in post. Simply apply a curves filter to the footage, and make a nice knee from the highlights into the midrange-it helps a lot and basically solves the hard clips in the highlights problem. If you can't do any color correction in post though, and you're having problems with the highlights, then it's probably better to just shoot with one of the other three gamma modes. Hope this helps. Jason

April 8th, 2003, 03:22 PM	#4
Miguel Lopez Regular Crew Join Date: Mar 2003 Location: Madrid, Spain Posts: 187	Could you draw me the curve? thanks

April 10th, 2003, 08:51 PM	#5
Scott Osborne Regular Crew Join Date: Jan 2003 Location: Rochester NY Posts: 116	Try this like there is a great screen shot of the curve http://www.dvinfo.net/articles/filmlook/broadway2.php Scott Infinite Reality Productions