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luminosity layer mode

COW Forums : DaVinci Resolve

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Ben Scottluminosity layer mode
by on May 8, 2012 at 9:16:38 am

I have been reading some interesting grading techniques for photoshop and wonder if they are reproducible in davinci

basically looking to use the rgb mixer set to monochrome and then blending that back over the original image as a luminosity mode, boosting contrast using the best channel

same kind of tricks are used with sharpening and high pass filters in photoshop

so can you create a layer blend mode similar to luminosity, tried parallel node but it justs keeps the desaturated image on top and layer modes dont have the option of luminosity


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Sascha HaberRe: luminosity layer mode
by on May 8, 2012 at 11:23:41 am

Just put it on the second track, change the compositing mode to add and fade it in.
Or use the output from the mixed as key signal for a node in which you boost luminosity.
I think the function in Aperture is called "Clarity"

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Ben ScottRe: luminosity layer mode
by on May 8, 2012 at 1:10:48 pm

not sure this is the same as a luminosity mode

add layer will change saturation, luminosity mode in photoshop is working in LAB and so shouldnt adjust chroma

also really not sure how you can convert RGB to keyer signal, especially since low or high range and softness cannot be full range

and combining a desaturated version of an image seems tricky as just a luminance adjustment


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Dmitry KitsovRe: luminosity layer mode
by on May 8, 2012 at 4:27:12 pm

Of course in photoshop such techniques were originally used and are still popular because it was somewhat difficult adjust luminosity of the image independently. In resolve we have Y- controls.


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Eric JohnsonRe: luminosity layer mode
by on May 8, 2012 at 11:50:12 pm

This is how I do what it sounds like you're talking about

Node 1) Primary
Node 2) Empty (unless I need to add something after the "blending")
Node 3) Monochrome RGB mixer fed from 1

Layer node (2 goes into the top, 3 into 2nd input)

In the Key tab adjust the Output gain towards "0". The closer to "0" you get, the more transparent Node 3 will get.

I do a version of this for a Skip Bleach look.... But I tend adjust the RGB mixer to change the Monochrome contrast.


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Ben ScottRe: luminosity layer mode
by on May 9, 2012 at 8:27:32 am

would this not give a desaturated look and therefore change the chroma

could reapply more saturation to an append node I suppose

think davinci could really benefit from a luminosity mode

and the person that said davinci doesnt need doesnt luminosity modes understand what I am talking about


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Eric JohnsonRe: luminosity layer mode
by on May 9, 2012 at 5:16:23 pm

It does change chroma, but that is why I use it as a portion of a skip bleach.

You could also use one of the "Composite modes" that are available inside the "Layer" node. That may do what you are looking for... Or you could do as Sascha described and use a composite mode in the Conform page with a duplicate piece of media on V2.

Play around, DaVinci is super powerful... I'm sure there are at least a couple of ways to do what you are looking for.


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Joseph OwensRe: luminosity layer mode
by on May 9, 2012 at 8:27:15 pm

[Eric Johnson] "Play around, DaVinci is super powerful..."

Or the OP could simply use the video mode of Photoshop...
jPo

You mean "Old Ben"? Ben Kenobi?


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Eric JohnsonRe: luminosity layer mode
by on May 10, 2012 at 12:20:38 am

That is also a serviceable option.


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Dmitry KitsovRe: luminosity layer mode
by on Aug 4, 2012 at 7:27:53 pm

No, that person understands perfectly well what you are talking about. My background is 13 years of Photoshop.
There is a technique originally appearing on fxPhd and LiftGammaGain forums that might serve as a basis of what you are looking for.
Here is a link:
http://www.liftgammagain.com/forum/index.php?threads/building-a-better-shar...


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