How to add film grain in Photoshop (the right way)

Use a grain plate on 50% grey in Overlay mode. It is faster than the Add Noise filter and looks far more like film.

Photoshop has a built-in Add Noise filter, and most tutorials stop there. The problem: digital noise is the same size everywhere, perfectly random and evenly coloured. Film grain is not. It clumps, it has a size that matches the film speed, and it sits mostly in the midtones.

A grain plate solves that. It is a separate image of grain only, on a neutral 50% grey background, that you lay over your photo.

Step by step

1. Download a plate from the film grain collection. Start with ISO 400 medium if you are unsure.
2. Open your photo and drag the grain JPG onto it. It lands as a new layer.
3. Set the layer blend mode to Overlay. The grey disappears and only the grain stays.
4. Lower the opacity to 30–60%.
5. Zoom to 100% to judge it. Grain should be visible at 100% and barely noticeable when the whole image fits the screen.

Why 50% grey matters

In Overlay and Soft Light modes, a pixel of exactly 50% grey changes nothing. Lighter pixels brighten, darker pixels darken. A grain plate built on 50% grey therefore adds texture without shifting your exposure or colours.

Make it look real

• Match grain to the photo. Bright daylight shots look odd with ISO 3200 grain. Night scenes look odd with ISO 100 grain.
• Scale with the image. If your photo is much larger than 3000px, scale the plate up with Free Transform (Ctrl+T) rather than tiling it.
• Grain after sharpening. Add grain as the last step. Sharpening on top of grain makes it harsh.
• Soft Light for colour work. Soft Light is gentler than Overlay and keeps skin tones calmer.