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shadowxaf.bsky.social
@shadowxaf.bsky.social

"Grain ... is not a simplistic lessening of image sensor noise reduction" I was hoping it would be a lessening of image sensor noise reduction, with perhaps a bit of noise added in some areas to increase consistency when there is multi-exposure trickery. Instead, it just adds a fixed noise pattern.

John Gruber
@gruber.foo

I don’t think it’s a fixed pattern, either, and it might have some relation to natural sensor noise. Apple hasn’t yet really explained it. I’m keeping my eyes out for interviews with photography oriented sites.

shadowxaf.bsky.social
@shadowxaf.bsky.social

On the first two sets of examples you give, if you toggle between the two versions of the same photo that include "grain", you can see all the grain in the image shift several pixels over, but with the same pattern.

John Gruber
@gruber.foo

Thinking back through my conversations, I think this makes sense. I don’t think Apple sees sensor noise as sufficiently analogous to actual film grain, so they don’t use that as a source. But they *do* use exposure settings. You get more intense grain in low light, which mirrors film.

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