Not exactly film grain, but it can apply an interesting grainy effect to your images. Give it a try and see what you think.V04This is my final attempt to produce a LoRA that approximates a film grain effect. Realistic analog film grain produces features that are difficult to reproduce digitally. I spent a lot of time producing new training images and then running the output through ChatGPT to determine the best prompt to help produce a realistic film grain result. Results vary across models. Some models produce better results. Take a look for yourself.Each of the prompts includes the following lines (more or less):<pre><code>35mm Kodak Portra 400 pushed one stop, fine natural grain, soft highlight roll-off, neutral skin tones. Slight shadow grain clumping. Indoor tungsten lighting, visible film grain.
A monochrome image.
A bright grainy photo, overexposed. With an artistically pronounced film grain effect in varying intensity across the image. Natural lighting.</code></pre>Note the parts: neutral skin tones and indoor tungsten lightingExclude these as appropriate, depending on your subject and setting. ChatGPT suggested all of this, and it seemed to produce a better result. Maybe you can come up with something better? I still think that, at times, the result is a little flat and smooth.Let's see your results.

Film Grain - CE

I wound the Flux Guidance right down to 2.0 for these images.

FilmGrain04_CE_FLUX_AIT4k.safetensors

V04 - Flux.1 D

V04 - Z-Image

V04 - Flux.2 Klein 9b

V04 - Z-Image Turbo

V04 - Qwen

V04 - XL

V03c - Qwen

V03c - Flux.1 D

V03c - SD3

V03c - XL

V2 - XL

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