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Post #727123

Author
Spaced Ranger
Parent topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Link to post in topic
https://originaltrilogy.com/post/id/727123/action/topic#727123
Date created
12-Sep-2014, 6:33 PM

"THX, this is Inner Control. You're off point 0 1 7 to the right. Correct it please."

Some time ago, I worked up a demonstration color-bars graphic, labeled with the standard's RGB numbers, for my future reference. The displayed colors are just for show but the numbers are the actual targets:

Your posted color-bars shows to be just a little off, by measuring the white (235,235,235) and black (16,16,16) areas:

In digital correction, the dark end of the spectrum should be raised a bit and the light end lowered a bit more. In capturing, this translates into a little less contrast, and sliding the resulting spectrum into the proper place with brightness (depending on how your hardware implements it's controls). When adjusted, all the rest of the colors fall roughly into their proper values. Finer tuning may require tint and color adjustments (but I have yet to work out those RGB equivalents to make further recommendations).