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NOTE: This question sat in the video processor forum for a few days with no replies, so I moved it. It's relevant to many people with expensive projectors, and there seems to be more forum activity over here.
This thought occurred to me recently as I've been learning about color correction in film/video production.
Grading films/videos is preferably done on RAW image files, or at least Pro-res (a compressed lossy format which is designed to retain a lot of information for image manipulation in post production).
What is not recommended is attempting to grade images which are encoded in formats meant for final desplay - because these formats are highly compressed and contain much less information than the original capture formats did.
So - is it also possible that attempting to apply a LUT to a compressed 8 bit Blu Ray signal will degrade it as well?
And thus, would it be preferable to always calibrate colors, gamma and grayscale as closely as possible in the projector's CMS itself - so that you are not altering (by transcoding) the compressed 8 bit video signal itself?
Or am I misunderstanding the way Lumagens process the video signal - do they avoid transcoding the signal itself, and merely change the values of chrominence and luminence on the Lumagen's outputs?
This thought occurred to me recently as I've been learning about color correction in film/video production.
Grading films/videos is preferably done on RAW image files, or at least Pro-res (a compressed lossy format which is designed to retain a lot of information for image manipulation in post production).
What is not recommended is attempting to grade images which are encoded in formats meant for final desplay - because these formats are highly compressed and contain much less information than the original capture formats did.
So - is it also possible that attempting to apply a LUT to a compressed 8 bit Blu Ray signal will degrade it as well?
And thus, would it be preferable to always calibrate colors, gamma and grayscale as closely as possible in the projector's CMS itself - so that you are not altering (by transcoding) the compressed 8 bit video signal itself?
Or am I misunderstanding the way Lumagens process the video signal - do they avoid transcoding the signal itself, and merely change the values of chrominence and luminence on the Lumagen's outputs?