Compositing Optimization in Nuke
Here's a handy article describing tips to optimize performance and quality when compositing. Highly suggest reading it all.
Nukepedia - 10 tips to optimizing Nuke
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Compositing Optimization in Nuke
Here's a handy article describing tips to optimize performance and quality when compositing. Highly suggest reading it all.
Nukepedia - 10 tips to optimizing Nuke

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HelloLuxx's iSculpt Training
HelloLuxx has set We Are Pitch Black's Sculpting training to free! This is a really good way to get up to speed sculpting in C4D. Grab it quickly!
Beeple's Everyday's Retrospective
Beeple has been creating an image a day for over 2750 days without breaking. The Creator's Project has an awesome article with Beeple talking about that and how he did it. Beeple on the Creator's Project
Quickly Replacing Textures in C4D
V-Ray Dynamic Memory Limit Calculator
So here's a very undocumented feature of V-Ray and specifically V-Ray For C4D. The Dynamic Memory Limit dictates how much memory is split up into different sub processes for V-Ray when rendering. The short description is that it can speed up rendering with the proper settings.
CGPinoy and Reygerali have posted this super helpful calculator for it.
V-Ray Dynamic Memory Limit Calculator
Just plug in how much ram your computer has (keeping in mind that you should really only have C4D open when doing this) and set your OS option and you have the amount of ram you can dedicate to it! Side Note: Mac OSX is roughly the same as Windows 7.

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Duplicating Comps - Quick Tip
Duplicating comps is extremely helpful when working on large projects or multiple small pieces to make a whole. Luckily there are two great ways to duplicate comps. The easy fast way to duplicate a comp is to just CMD+D the comp in the project panel.
There's also a more robust way to duplicate comps which includes every single comp and file inside it. This can be quite helpful and quite messy at the same time.
True Comp Duplicator This awesome plugin gives you tons of options to duplicate comps with files and even has some really good search options.
Complete IOR List
Index of Refraction is really important in the 3D world to realistically simulate fresnel values existing in real life. This list I found is a really large compilation and is easily the longest one I've ever seen. http://forums.cgsociety.org/archive/index.php/t-513458.html
With great power, comes great responsibility.
Hiding selections in Sketch and Toon
Here's a quick tip on how to hide unwanted things in the Sketch and Toon shader.