The Hollywood Color Nerd Who Shot ‘Knives Out’ Explains His Viral iPhone Camera App
Yedlin is the rare cinematographer who publishes his research. His famous display prep demo showed two clips shot on completely different cameras, graded to be indistinguishable, and it quietly reshaped how a lot of working colorists think about their craft. So when he says an iPhone app uses the same color math as a Knives Out feature, he means it literally. This is a man who treats color as a computational problem.
The $13 price is the interesting part. It's cheap enough for enthusiasts but not a casual impulse buy, and it sidesteps the subscription model that has taken over most photo apps. I'd want to know how it handles the iPhone's computational photography pipeline, since the camera already applies its own processing before the app sees the image. Yedlin's whole argument is that the pipeline matters more than the sensor, so the app's quality will hinge on how much raw data it can grab.
Most "film look" apps are presets that slap on a curve and call it a day. Chromagraph is built by someone who actually designed the math for theatrical release, and that alone makes it worth a look.