Nex-C3 gets red noise in High ISO. Is it normal?

boogieboogie wrote:

At high iso there is often green/pink patches with plain surfaces at graduations between light and dark. I never noticed this before but I have a few indoor pictures with cream walls in tungsten lighting that have a pink cast switching to green in certain areas.

I think you should stop taking pictures of plain walls and worrying about noise and pixels at extreme iso and start taking pictures of a range of real subjects in different lighting, then decide.