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-   -   Knee (https://www.dvinfo.net/forum/jvc-gy-hd-series-camera-systems/61984-knee.html)

Bruce Meyers March 3rd, 2006 02:46 AM

Knee
 
What does the knee mean? 100 vs 108 percent? What do these each mean? What about these numbers in terms of white clip, I don't really get it...

Luis Otero March 3rd, 2006 09:39 PM

Bruce,

Maybe going to http://www.24pdigitalcinema.com/cinegamma.pdf will help you. It is a little bit technical, but after some serious reading (no "honey please" interruptions), you will get a much better grasp on the subject.

Hope this helps,

Luis Otero

Bruce Meyers March 4th, 2006 05:38 AM

Can someone tell me simply/ in laymans terms what setting the knee to 100% vs. 108% will do?

Brian Drysdale March 4th, 2006 06:16 AM

Quote:

Originally Posted by Bruce Meyers
Can someone tell me simply/ in laymans terms what setting the knee to 100% vs. 108% will do?

This is setting the clipping level rather than the knee.

100% is peak white, which is max video level that a transmission system is meant to carry. They have a clip which cuts off any signal that goes above that, although 102% seems to go through OK. Video cameras have a clip built in and the level of this can be set by the user.

By using a clip of 108% you're carrying a bit more highlight information into post production where the colourist can make a considered decision on the best way to use it. However, they'll have to ensure they produce a broadcast standard video output that won't cause difficulties in the transmission chain.

The 108% is useful if you're planning a film out.

Bruce Meyers March 4th, 2006 06:26 AM

Thank you
 
Thank you cery mcuh


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