Way to View Individual Color Channels in Resolve

[Dermot Shane]

I dont know much resolve but it must be fairly easy to make three nodes where you in the first make the r b curves to a flat line and then desaturate the result to zero that node is then your G chanel. Then make one for B and one for R then you toggle between those three. Would that not show you your chanels seperatly in BW?

Then you can treat those black and white images seperatly for example you can make some really cool beauty passes by being able to remove a certain frequency of noise within a channel etc.

to combind the three again into a rgb picture you simply use the three black /white images and pipe a 100 % red blue and green image into the corresponding key and then add them together with add transfer mode.

yes it does all that quite easly, a prebuilt splitter->R-G-B->combiner node tree is one button push away at all times

But its odd that resolve does not have r,b,g keys as hotkeys to see channels seperatly then hold in all three to get back to normal again

and that's what it does not do... and i find it odd too

 

[Marc Wielage]

Spliter/Combiner is also useful for analyzing and treating Noise in the individual channels. Like Marc said, typically the Blue channel is the worst of them so a little NR fairy dust on that channel alone might do the trick without killing overall detail.

That is a trick I've used for years: a little NR to Blue-only. Note that the NR will need to be Luminance-only if you're using a splitter/combiner, since the signal is technically monochrome.

Simply a lot of times blue and green channels are not too different but blue can be more starved and has worse debayer/grain than green. So by replacing the blue channel with something that is a mix of the blue and green channel you still have 3 unique channels but. The noise of blue is decimated from borrowing from the smoother green channel and also when mixing two grains with each other the result is a smother grain.

I have sometimes been able to recreate lost detail with clipped exposure by stealing pieces of the good channel and adding it to the clipped channel using the RGB Mixer. Not so much with noise.

yes it does all that quite easly, a prebuilt splitter->R-G-B->combiner node tree is one button push away at all times.

Yes, I'm fast enough on the panels that I can isolate Blue-only and see if the problem is just there. But in truth, I trust the scopes 95% of the time.

 

[Zeb B]

I always learn something from Mr. Wielage