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On my A7s I noticed that when shooting in SLOG2 if I go up to ISO 8000 the image will have a different noise pattern than if I go up to ISO 10,000 and then down to ISO 8000, same ISO but totally different noise I know that people have reported a similar issue with the A7sii with SLOG3 but what I read was it was believed to only be a bug with that picture profile It's this kind of "Trick" ISO that does something weird to the noise Going up give the ISO a kind of "Dirty" grain but going down to the very same ISO will give the ISO a "Clean" grain I compared Native 3200 to this ISO 8000 when it had a "Clean" noise and also the "Dirty" noise http://imgur.com/RzOCZko http://imgur.com/AWU0IED http://imgur.com/G6QoXWl The thing is I see this not just on SLOG2..I see it on all picture profiles..on multiple different camera models... On the A7s this happens on the following Picture Profiles on the following ISOs: http://imgur.com/SLmoyEF Here is a video of me going over the issue and explaining more in-depth:

hi guys! i just bought my sony a6500 and did some video recordings with it. unfortunately the footage turns all grainy even when i set the iso to 800. i use this on a sony 50 mm f 1.8 lens and shot in on both xavcs hd 120p & 4k at 24p. if anyone knows how to solve this, please help! because i'm going to shoot an event next week with this camera, thank you! below here is the the sample of the footage.