lift/gamma/gain VS. ASC CDL

Following my previous post “lift-gamma-gain color correction formula with blender compositing” I continue my research about all those formulas. Comparison I came to compare the ASC CDL (American Society of Cinematographers Color Decision List) formula to the Lift/Gamma/Gain formula I found on Blender.org Here are the results : Where the formula are : CDL : … Continue reading lift/gamma/gain VS. ASC CDL

2.5D relighting in compositing with Blender (using spherical harmonics)

Introduction About a year ago, I was watching a great presentation at the Nuke Master Class by Roy Stelzer (2D TD at Double Negative) about “2.5D Relighting inside of Nuke”. There is 3 videos which you can download from The Foundry and also files which goes with. I recommend you to watch those videos especially … Continue reading 2.5D relighting in compositing with Blender (using spherical harmonics)

Color Grading with Blender 2.5

Introduction Yeahh Matt Ebb just commit my patch (SVN r27733) for the “Color Balance” node in Blender 2.5 Compositing node !!! Now it should be much easier to work with. You can get a version of blender at Graphicall.org (any version above revision 27733) There is still some precision issue on the color wheels, I … Continue reading Color Grading with Blender 2.5

Exposure/Offset/Gamma photoshop tool to Shaders

The goal here was to understand how works the Exposure feature of Photoshop for my research on lift/gamma/gain NB : I wouldn’t say I’m an 100% sure about how it works, but that’s how I understood it worked so far Exposure : I though exposure was more complicated than that (maybe it is) but the … Continue reading Exposure/Offset/Gamma photoshop tool to Shaders

lift-gamma-gain color correction formula with blender compositing

I got lately interest in Lift/Gamma/Gain formula for some personal project, I thought I would share some of the informations I found. What does Lift/Gamma/Gain ? Lift/Gamma/Gain is actually is a really nice approach for color correction in my opinion. Lift/Gamma/Gain are actually controlling the Shadows/Mid-tones/High-tones of your picture with the ability to offset the … Continue reading lift-gamma-gain color correction formula with blender compositing