Luke's Lab
by Nobl StudiosColor science you can see and move. Interactive notes from building Nobl Film.
Posts
Picture Formation
AgX Picture Formation: how a render becomes a photograph
A guided, interactive tour of the AgX image-formation chain — the inset/outset chromaticity geometry, the per-channel tonescale sigmoid, and the path-to-white it produces. Ported faithfully from the Camera-AgX DaVinci Resolve DCTL.
Color Management
Gamut Mapping: fitting wide colors into smaller spaces
What happens when a color is too saturated to display? An interactive exploration of gamut mapping — clipping vs. perceptual compression — across ProPhoto, ACES, DaVinci Wide Gamut, Rec.2020 and sRGB.
Tools
Test Chart Generator
Need a hacky file to stress test your image editing app?
Chromatic Theory
What is saturation? HSL, HSV, saturation, vibrance and more
An exploration of saturation, chroma, and vibrance. Learn how HSL and HSV define saturation mathematically, and how modern color spaces correct their limitations.