Camera sensors have the same amount of noise regardless of ISO. It's just that bigger or better-engineered sensors have less noise period, so less is revealed a

Camera sensors have the same amount of noise regardless of ISO. It's just that bigger or better-engineered sensors have less noise period, so less is revealed as you raise the gain (ISO). I might have written a little about this: https://ko-fi.com/post/What-the-heck-is-ISO-A-sensitive-question-A0A56H3VN https://ko-fi.com/post/What-the-heck-is-ISO-A-sensitive-ques... The ideal for this would be an old sensor with lots of noise since anything new would have very little visible at any ISO. Maybe even the sensor in the camera they use for the lava lamps! A lava lamp has the benefit of being fully analog. There's no way to exploit it to make it predictable without physical access to mess with the chemistry to make the blobs stop moving around, and you'd have to do it to all of them without anyone noticing the blobs stopped blubbing. The camera on it 24/7 would make this a bit hard.