One of the rare occasions I'm working with 10 DNX220X media created from 16bit tiff sequences and I found the need to adjust my units to 10 in the color correct to get more precise control over adjustment. I noticed the points in 8 bit 16,16 and 235,235 become 288,288 and 726,725 respectively in 10bit. Similarly 0,0 and 255,255 in 8 bit become 256,256 and 766,766 in 10 bit. for every point in 8 bit movement I see a 2 pt jump in the 10 bit value. For example 0,0 8 bit is 256,256 10 bit going back to 8 bit and moving the point to 1,1 in 8bit yields 258,258 in 10 bit. I would think adding two extra bits in 10 bits should add the possibility of 4 discrete points between the corresponding 8 bit values. I would expect to see 4 points of value change in 10 bit for every 8 bit point change. What am I missing here? Also why does the 10 bit units start at 256 and not 0? I would also think the top should be 1024 not 766. I must not understand
the binary math here or something about how Avid is representing 10bits in the GUI.
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
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