Chromagraph puts Rian Johnson’s film grade on iPhone photos

By Nathan Brooks

Chromagraph Camera costs $13 and gives iPhone users the film-like color treatment Rian Johnson uses on his movies, bypassing elements of Apple’s image-processing pipeline. Johnson and longtime cinematographer Steve Yedlin built the iOS app with a few settings. It exposes image-processing choices good enough for a Hollywood production, despite its spare interface.

Why did Johnson build his own iPhone camera?

Johnson, director of Knives Out and The Last Jedi, is an analog photography devotee who often carries a Leica M6 on set. He still reaches for an iPhone when that proves easier, but wanted its photographs to carry the grade applied to his films.

Johnson said carrying a camera on his shoulder or a backpack holding four cameras was “a pain in the butt.” His practical case for the phone was simpler: he always has it with him.

What does Chromagraph change on the iPhone?

Imported RAW files can be processed inside Chromagraph, making it a camera and editor in one. Primary settings cover maximum exposure time, burst mode and color tuning, while imported images gain controls for tone, color, saturation and texture. Not every photograph works immediately, but the workflow gives users room to tune the result.

The app applies the movie treatment during capture and again to files brought in from elsewhere. That puts grading inside the phone workflow instead of leaving every image as a conventional point-and-shoot result.

Why does RAW remain the useful starting point?

Johnson’s interest predates the smartphone. He bought a Nokia phone with a camera advertised as its main feature, then judged the camera awful while remembering the images as grainy, contrasty, funky and beautiful.

Modern phones have improved sharply, but their defaults often look sharper, brighter and more clinical than images from before computational photography took hold. The familiar workaround is to shoot RAW and edit the results, which restores character at the cost of more work.

Johnson first tried the iPhone’s default camera and edited in Snapseed. He then moved to third-party RAW camera apps, only to become bogged down moving files and adjusting endless sliders. He said the process left him unsure how he had reached the finished result.

Do built-in film effects close the gap?

Apple has added a texture panel with film, grain and halation settings to the iPhone 18 Pro, while Google introduced a “Camera Looks” panel in the Pixel 11. Both add character, but neither provides the control obtained by starting with a RAW image.

For a repeatable look tailored to one photographer or film, RAW remains the more flexible base. This is where Chromagraph places its bet: take control before the phone’s default processing finishes its work.

How did a movie color pipeline reach the phone?

Yedlin believes the right algorithms and settings can make a digital image indistinguishable from one shot on film. A few years earlier, he created color-grading scripts to give Johnson’s movies an organic celluloid appearance.

Those tools eventually graded still RAW files and film scans with the movie color pipeline. Johnson’s confidence in Yedlin’s control of that pipeline turned the experiment toward mobile photography.

Johnson said he knew Yedlin could do it, then called and pressed him to repeat the feat for iPhone photographs. He repeatedly asked, “Can we do it for iPhone photos?” The exchange led directly to Chromagraph.

Why did Chromagraph spread so quickly?

Over a weekend, Chromagraph went viral on social media. Early users praised its results against Apple’s default processing, and the grading engine, rather than the camera controls, drew most of the attention.

The app remains at an early stage, with some settings and interface elements placed in unexpected locations. That disorder does not hide the central proposition: a small set of controls can produce a distinctly cinematic result without a conventional grading suite.

Does old photography still hold the appeal?

During a coffee conversation, Johnson became animated when discussing the 8 × 10 wet-plate photography he experiments with at home. He has also built a darkroom and continues to explore analog photography for its physical process, describing the activity as a hobby whose pleasure lies in making the image.

His point is not that every image needs grain. The attraction lies in doing the work, which explains why he remains interested in film after building a digital alternative.

Apple and Google are now placing film-grain and look controls inside their phone cameras, while third-party RAW apps already serve the same editing task. Chromagraph’s $13 price and personal cinema pipeline must now compete on control and convenience, not novelty.