What is film grain?
Grain is the fine, random texture you see in film photos, most of all in skies, shadows and other smooth areas. It isn't dust or damage. It's what the picture is made of. Here's where it comes from, and how to use it on phone photos.
By the DisCam team ·
Where grain comes from
Film is coated with tiny light-sensitive crystals of silver halide. Developing turns the crystals that caught light into specks of silver. In colour film, those specks are then swapped for tiny clouds of dye.
Those specks and clouds are scattered at random, and in clumps. Enlarge a frame and your eye picks them up as texture. That texture is grain.
Faster film, bigger grain
A film's speed, its ISO number, says how sensitive it is to light. Faster films, such as 400 or 800, catch more light with larger crystals, so they suit dim scenes but show more grain than a slow film such as 100.
That's why film names often include a number. DisCam follows the same idea: Mono 400 and Noir 400 are its grainiest films, and Chrome, with its crisp slide-film contrast, has the finest grain.
Grain isn't noise
Digital noise comes from a camera sensor struggling in low light. It shows up as speckles of brightness and blotches of colour, and phones work hard to smooth it away. Smoothed too far, skin and skies turn waxy and fake.
Film grain is finer and more even, and it sits naturally in the mid-tones. Adding a little to a phone photo puts back some of the texture all that smoothing took out.
How much is enough?
Judge grain at the size people will see the photo, which usually means on a phone screen. If you notice the grain before the photo, there's too much.
- Colour photos: keep it low. A little texture is enough.
- Black and white: you can go further. Heavy grain often suits mono.
- Big prints show grain more than small screens do.
- Social media compresses photos, which can turn heavy grain into blotches.
Grain is only part of the look
Grain on its own doesn't make a photo look like film. It works with the rest: the way film shifts colour, softens contrast at the ends and lets bright light glow. Our guide to making photos look like film covers each part.
Grain in DisCam
Every DisCam film has grain built into its recipe, and the Grain slider turns it up or down from 0 to 100%. Each photo gets its own grain pattern, so no two prints share exactly the same texture, just like frames on a real roll.
- Original stays true to life, with a little grain.
- Mono 400 is grainy on purpose.
- Want to try it on a photo you already have? The free online film filter adds the same grain in your browser.
Original
Soft
Mono 400
Noir