Grain_CB v2.5

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Contributor: Chad Buehler
The Grain node rebuilt from scratch. Lean and powerful with lots of features.
10.0, 9.0, 8.0, 7.1, 7.0, 6.3, 6.2, 6.1, 6.0 or later
Linux, Mac, Windows
29 Apr 2018

This grain retains all the presets from it's predecessor, plus an additional one for digital noise.  You have the ability to gang the seeds together, so they are identical.  You'll find both blur and sharpen enhancements for the grain.  There's a LUT color style range controls for setting film response low/mid/high.  You have the ability to use either the incoming alpha or the mask input, to mask the grain or apply grain everywhere.  I've included the ability to increase the density of the grain, in the less dense areas of the matte.  There is also a mix to decrease/increase the overall grain level.  There's also 2 additional tabs.  The first one is for boosting the brightness of the grain on the low end, useful when D.I. has gone too far and you still have to match.  The other is for working on undistorted plates.



Unique to this gizmo

- only grain written from scratch (not using grain or noise nodes), which is lighter and it allowed the chance to fix the inherit crawl of the grain, where it looks like it's moving across the screen

- at a formula level you can control softness/sharpness

- gang the red, green and blue seeds

- anamorphic option for grain

- option to use luminance and master controls or use separate RGB in the LUT range

- apply grain correctly to undistorted plates

- output grain only, based off of input image

- mask red, green and blue individually with their own mattes

- increase the density of the grain, in the less dense areas of the alpha (falloff)

- create your own presets, in an external text file and load them, which can be set up differently for different projects as you can determine where it loads from


If anyone comes up with any good presets for film, Red camera, viper, genesis, etc, let me know what they are and I'll add them to the presets.


tutorial for UV


If you're work flow involves Scanned Grain, you might want to check out


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0 # Cyntia Buell 2010-11-08 16:05
0 # djati waskito 2010-11-23 15:31
bravo !!
0 # Howard Jones 2010-11-29 17:34
great - thanks!
0 # Pannneer selvam 2010-11-30 09:06
thanks ,,,
0 # Nick Guth 2011-04-27 15:46
Any RED presets made? I will make some soon, but just checking to see if they're already made. Cheers!
0 # Chad Buehler 2011-04-27 16:58
Currently no RED presets, just the basic Digital Noise. Send me your final settings and I'll add them.
0 # Nat Jencks 2011-07-12 14:25
This isn't working for me in nuke 6.3 I get the error "traceback (most recent call last): File"", line 1, in RuntimeError: Grain_CB: Unknown command. Any Ideas? Thanks!
0 # Chad Buehler 2011-07-12 18:11
Hmmm. Sounds like the foundry broke forward compatibility. I'm not currently playing with the 6.3 betas. I'll try to look at it within the next week or two and see if it's something I can fix or if the foundry has to fix it. What OS are you using and which beta?
0 # Nat Jencks 2011-07-12 22:37
Mac OS 10.6.7 and Nuke 6.3v1b34

Thanks Chad, let me know if you discover anything, or if you'd like me to do any testing. Best- Nat
0 # Omar Colocci 2015-10-30 11:53
This is indeed the best grain tool I've used in Nuke so far.

The ability to adjust curves for grain response is finally here. As a Flame guy I've been missing such feature for a long time since I started with Nuke.

Thanks a lot. Awesome job!
0 # michel Alpha 2018-12-14 17:06
tkx a lot !
0 # ankur suvarapu 2019-09-17 14:17
thanks alot

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