Chromagraph Camera: $12.99, RAW film look

Filmmaker Rian Johnson, who wrote and directed "Knives Out" and "Glass Onion," built Chromagraph Camera with cinematographer Steve Yedlin and programmer Eric Cameron. The app brings image processing from their films to iPhone still photography.

It shoots RAW photos and processes them with techniques Yedlin developed for his films. The result is a distinct treatment of color, contrast, and grain, plus halation, a soft glow around bright areas. You can adjust the look with controls for color, tone, and texture.

The effect shows up after you take a photo, when you open the app's gallery. Original RAW files stay intact, so you can change edits later.

For sharing, photos can be exported as JPEG or HEIC files with the processing applied. An automatic export option also sends each finished photo to your photo library.

That means you keep the untouched RAW file and still get a ready-to-share version.

Chromagraph Camera costs $12.99 as a one-time purchase on the App Store and requires iOS 17 or later. It currently ranks No. 1 in Photo & Video on the U.S. App Store.

Johnson's announcement on X drew six million views within a day, and users have been posting their results, with some photos collecting thousands of likes. If you want to try it, download it from the App Store on a device running iOS 17 or later.