Demonstrates various premultiply and unpremultiply workflows in different work situations for color correction, colorspace conversion, and transformations. Offers tips on how to troubleshoot premultiply problems.
- [Voiceover] Hi, this is Steve Wright.…Welcome you to this week's Nuke Nuggets:…Premultiply and unpremultiply workflows.…This video has no exercise files.…It's a watch-only demo.…We covered how premultiply and unpremultiply work…in last week's video.…This week, we'll take a look at proper workflows,…when and how to use premultiply and unpremultiply…in your composites.…It turns out it's pervasive throughout Nuke.…Now, before we begin, there are two very important rules…you need to know.…
Rule number one,…colorspace conversions and color corrections…must be performed on the unpremultiplied image.…Rule number two, filtering operations must be performed…on the premultiplied image.…Filtering operations are like doing a blur…or, if you're doing any kind of an image transformation,…the pixels are filtered,…so it applies to premultiplied images.…So let's take a look at the colorspace conversion issue…because that affects the read node.…
I've set up the proper workflow for a read node right here.…Now, what I did was I set the read node to be raw data,…
Author
Updated
3/1/2018Released
3/3/2016What kinds of NUKE tips do you need? Join the Steve Wright's NUKE NUGGETS group on LinkedIn, and post your requests there.
Skill Level Intermediate
Duration
Views
Q: Why can't I earn a Certificate of Completion for this course?
A: We publish a new tutorial or tutorials for this course on a regular basis. We are unable to offer a Certificate of Completion because it is an ever-evolving course that is not designed to be completed. Check back often for new movies.
Related Courses
-
Nuke Essential Training (2014)
with Steve Wright7h 36m Beginner -
Compositing a Sci-Fi Force Field in NUKE
with Steve Wright2h 12m Intermediate
-
Introduction
-
1. Nuke Nuggets Weekly 2016 Q1
-
002 Photorealistic light glows11m 36s
-
066 Hierarchical roto7m 28s
-
068 Curve editor12m 8s
-
2. Nuke Nuggets Weekly 2016 Q2
-
014 How to create a bump map9m 35s
-
015 How to do a glam pass7m 54s
-
3. Nuke Nuggets Weekly 2016 Q3
-
031 How to use NUKE expressions10m 32s
-
4. Nuke Nuggets Weekly 2016 Q4
-
045 Advanced User Knobs7m 9s
-
047 Secrets of the Grade node10m 35s
-
Nuke Nuggets Weekly 2017 Q1
-
053 Projections3m 15s
-
054 Side by side3m 54s
-
055 Gain without grain5m 28s
-
056 Time markers6m 41s
-
057 Position pass tracking9m 40s
-
058 Field mask11m 2s
-
059 Image array9m 53s
-
060 TimeEcho clean plate6m 47s
-
Nuke Nuggets Weekly 2017 Q2
-
061 Normal relighting6m 1s
-
062 Image lineup11m 17s
-
063 Viewer magic9m 34s
-
064 About time10m 9s
-
065 More about time11m 7s
-
067 Precorrect bluescreen6m 56s
-
069 Animation time5m 17s
-
070 IBKColour node11m 51s
-
072 IBKGizmo node9m 28s
-
-
Nuke Nuggets Weekly 2017 Q3
-
073 Fog11m 5s
-
074 Edge grading5m 45s
-
075 Resize rotos3m 25s
-
076 Edge extension5m 55s
-
077 Color nodes10m 13s
-
078 Wound reveal6m 28s
-
084 Using the Emboss nodes5m 32s
-
-
Nuke Nuggets Weekly 2017 Q4
-
Nuke Nuggets Weekly 2018 Q1
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.
CancelTake notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.
Share this video
Embed this video
Video: 011 Unpremultiply workflow examples