Let’s start in NUKE 12.2 - 04 Understanding Premults & Alphas in NUKE
In this tutorial, you will learn the concept of Premultiplication in Compositing. You will learn how to stencil out backgrounds with the help of an Alpha channel and what the NUKE Merge Node wants to have as input. Also, we talk about different Merge Operations and why it is so important to know when to unpremult and to premult - for example with Color Corrections.
These topics are covered:
Project Settings
Reformat a Plate
Generating a colored Background
Merging FG & BG
Merge operations
Mathematical Operations in Merge
Why is Premultiplication important?
Radial Node
Adding Postage Stamps
Using Merges
Understanding Multiply & Plus
Premultiplication by hand
Dot Nodes
Premult Node / Unpremult Node
Premult Alpha / Straight Alpha
Color Correction needs Unpremult
Preventing Color Correction Artifacts
Node Clones
You find the files for this lesson on my Gumroad (free) and on my Patreon!
This tutorial series „NUKE Practice Hour“ focuses on node-based Compositing with Foundry NUKE, NUKEX and NUKE Studio for 3D & VFX. It’s meant for beginners in NUKE who want to learn the fundamentals of Compositing with this great compositing package in a fun, but also practical way.
Helge Maus is a Senior VFX Trainer | Houdini FX Generalist | NUKE Compositor with more than 20 years of experience in training. He delivers with his company pixeltrain | 3D | VFX | animation in-house training, workshops and online-coaching for the 3D & VFX industry.
If you have questions or topics, which should be added, please let us know.
If you want to support me for publishing more free tutorials you could join my Patreons: / pixeltrain3d
Or simply buy me a Cappuccino: paypal.me/pixeltrain
And here the Gumroad Link for Project files:
gumroad.com/pixeltrain3d
Find more information on www.pixeltrain.net
KZread: / pixeltrain3dvfxtrainings
Twitter: / pixeltrain
Instagram: / pixeltrain3d
VIMEO: vimeo.com/pixeltrain
LinkedIn: / pixeltrain
Artstation: www.artstation.com/pixeltrain
Пікірлер: 11
You should be the teacher of my college
This was the best explanation I could find online on premult-mult etc. Thank you!!
These is so needed and helping while rotoscoping and other also. Hi sir myself Rony i'm a VFX CG student from India
@pixeltrain3d
3 жыл бұрын
greetings to india
New subscriber! Keep up the nuke Tuts!
I finally get to understand more Premult and Unpremult. Very good explanation. Thank you so so much. As I said previously, I am working with some footage with bleu screen and want to clean it to integrate into some rendered scene I've made with Houdini. I have to use Keylight and make a roto, but I get very confuse all the time with the connections, the merge modes... It's always many many trial and errors, because I don't understand clearly what I am doing and what Nuke is expecting as information. Looking forward to your next video to help me understand more and many tutorial online. But each are very specific an sometimes have very complicated setup for simple situation like mine. If you have some pointers for me I would be very grateful. Hope you are well, and again thank you for all your great work.
thanks a lot man.
@pixeltrain3d
3 жыл бұрын
You're welcome!
please make a very long tutorial on how can we use blender render passes in nuke
@pixeltrain3d
3 жыл бұрын
Hm, the renderpasses I will explain in the next NUKE Production Hour are the typicall passes you get from the most Render-Eingines. When it comes to Renderpasses, Cycles in Blender is really close to V-RAY or Arnold. So, in the next Practice Hour we will dive into CG Compositing in NUKE. Hope that will bring light to your question :-)
@raimuhammaduzairfareed7628
3 жыл бұрын
@@pixeltrain3d ok, Great 👌 I am waiting for that ..