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11th June 2021, 14:18 | #121 | Link | |
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It would be faster (and better quality) to go directly to limited range YUV from RGB; instead of RGB to full range YUV then to limited range YUV in 8 or 10 bit (using a coloryuv or similar step) - because the latter involves an extra quantization step. You can demonstrate that 2 steps introduces more banding. Basically, fewer steps in integer math (resolve works internally in float), results in higher quality, fewer rounding losses |
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11th June 2021, 16:08 | #122 | Link |
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Well, I do not grade with Resolve. I do the grading in Edius usually in YUV (I might be using the Edius-internal Primary Color Correction Filter which is suspected to work in RGB, but let's leave that out).
If this is not what you were refering to, then I could understand that it might be better to record tv-range rather than full-range (which applies to sensor-RBG > YUV) with having to apply ColorYUV() for tv-range at the end of the yuv-chain because quality loss of the additional ColorYUV() quantisation is likely to be more relevant than the narrower range. To put it short: Only record Full if you are sure to also display Full. This way ? |
11th June 2021, 19:33 | #123 | Link |
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In general, you'd only use full if you're going to be grading it more than some minor adjustments (if you're still going to limited, full range acquisition can help when grading) , or if you final output is full
How are you adjusting the log footage ? If you're using LUTs , there is going to be an RGB step somewhere (at least internally or hidden) |
11th June 2021, 20:16 | #124 | Link |
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Ok, so I need to weigh the decision according due to the level of grading needed. Since I always fight with high contrast with my landscape footage I will probably stay with Full while recording and maybe I will have a projector being capable of displaying Full as well. Seems more future-proof to me and ColorYUV() did quite a good job I found.
Currently I am not shooting LOG because it has to be paid extra with the Panasonic G9. I am using a profile called Cinelike-D which is pretty soft. I grade it to personal gusto using standard YUV-Tools in Edius. But if the GH6 comes out I will probably go for either YUV422 10-bit 50p with HLG2100 or - if it is available - VLOG but with V-Gamma (very wide gamut). I want to move to wide gamut about which I had an interesting discussion with Frank. So I start to shoot HLG.2010/2100 which is also available on my G9 (10-bit but only 25p). There is a grading option in the Primary Color Correction Filter in Edius, where you can also apply LUTs to transate HLG2100 to Rec709 until I am equipped with an HLG capable display or projector (might take some time). The conversion results are not very satisfying. The reds and greens do not look very natural. Just started... |
12th June 2021, 01:13 | #125 | Link | |
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Full range is "better" in the sense that shadows, midtones, highlights are less compressed. ie. A given scene is described more accurate or better. You have 1024 "slots". It's easier/better to make adjustments or tease out details in a given range |
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