White Balance

I normally use 3700K in the theatre now with the mixed lights. Shooting Vlog I can usually fine tune in Resolve to be colours we remember
 
Tom Roper said:
I was really happy with both of these wedding videos I shot, 6 years ago with the Panasonic GH5 (Raising Cain), and 2 years ago the Mexican wedding with the Blackmagic Pocket 6K, both graded in HDR10, the GH5 shot in VLog-L and the P6K BRAW, both using a fixed WB setting but the temp I don't recall with certainty. The Raising Cain was probably 5200K since it was outdoors, the Mexican wedding likely 4000K to start out for the sodium lights (they come on again at the end), and probably not changed after they were turned off. There's clipping for sure, but the Raising Cain video, outstanding skin tones after a heavy grade. Great band performance by the way, worth a look (and listen) to watch it all the way through.

The Mexican band used laser powered spotlights, extraordinary brightness and power, line array loudspeakers. These were not ordinary cocktail leds, so I would not agree IR, UV or colorspace causes the clipping, the brightness does! Watch them both in HDR if you can. If not, they still look decent imo but there is a definite pop with the HDR and more DR in the grade.

In general, my comment would be that yes, you want them to show up as party colors, but also to reveal the underlying accurate skin tones. It's not an "either or," it's an "and."

If you were trying to do this in camera 709 without a post-grade, hopeless.

Click to expand...
Yes! I like the tamed down and control over the LED lighting you achieved here. Working with LOG, it appears to be a little bit easier to fix LED over burn. Where I struggle is when someone drops a 709 color space shoot and wants blue LED burn corrected.

After the madness of Xmas Day, Boxing Day was a chilled out, laid back day. I got around to thinking about this problem further last night... sad I know! I got to thinking, is there an easier way to fix this issue? Furthermore, I think I may have found another approach. It works to some degree in a 709 workflow, meaning it should work quite well for various LOG workflows. It's based off using Resolve's "ACES Reference Gamut Compression". More can be found at the link below.

I don't know if I grabbed the following concert frame-grab off this forum or DV Info. But it gave me a chance to check out the workflow. I think it offers a big improvement over an original video with bad LED burn, even if the colors are not 100% true to form. Thoughts?

Chris Young

https://docs.acescentral.com/guides/rgc-user/
 

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Chris im not seeing 'blue stage LED..." as good !

It has that horrible patch.

I think some more thought is needed. I also have been mulling it over christmas.

I think in the (natural world) clipping always goes to white.. so if you over expose a red or blue ball lit by the sun the camera will eventuall hit 255 255 255. Theses leds seem to deliver 0 0 255 and that is an entirely non natural situation?

Maybe a transform of the nature "If B>254 then R=254 G=254" is needed.

One could make that with soe special curves in resolve?
 
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