-
How to bypass input LUT for selected shot?
Hi all.
I have an Alexa project, about 50 cuts, with couple of time-lapse videos, shot on DSLR.
I’ve started to grade before the time-lapses was shot, so in project settings i’ve applied input LUT for Alexa. But now, of course, this lookup also affected the DSLR shots.
So question is: is it possible to turn off or bypass input LUT for some of the shots on timeline, or the only way is to work without general input LUT, and then apply input LUT to every shot, where one is necessary?Andrew Shtern
Editor/Colorist
The Coffeepost @Kiev, UA -
4 Replies
-
Or you just go to th Arri site and bake yourself a fine Vodie-LOG C Lut and apply that to the ones you want to exclude.
A slice of color…
DaVinci 8.0.1 OSX 10.7
MacPro 5.1 2×2,4 24GB
RAID0 8TB eSata 6TB
GTX 470 / GT 120
Extreme 3D+ WAVE -
Sorry, but I have to ask the question: why are you applying an Arri LUT as an input LUT? You’re much better off using it as either an output LUT or in a downstream node and thus having access to all of the information in the logC original. By using the LUT on the input, you’re basically defeating the entire purpose of using the LogC format.
-
Well, Does it actually matter when Resolve treats values in floating point ?
I had bad experiences in Scratch when using the Alexa LUTs as an output or viewing or grading LUT.
When changing color, it looked like is was squeezed through the Lut and we had funny banding everywhere.
That also occurred with animated blends and color animations.
But when using the LUT first, the animations looked smooth.A slice of color…
DaVinci 8.0.1 OSX 10.7
MacPro 5.1 2×2,4 24GB
RAID0 8TB eSata 6TB
GTX 470 / GT 120
Extreme 3D+ WAVE -
Yes, the order of operations most definitely makes a difference. That is one of the reasons for the node based pipeline, to be able to control that processing path. Placing a LUT, particularly a log to video LUT, at the beginning of the processing path can and does yield a different result than placing it at the end. Not to mention the additional degree of control you gain by being able to grade both prior to and after the LUT transform. Based on my own experiments, the path is not concatenated, but it is applied in the order specified by the node tree. The only way it gets concatenated is if you generate a LUT that represents that entire tree.
If I’m wrong about this, I would invite either Rohit or Peter to please correct me.
Reply to this Discussion! Login or Sign Up