GaryLH
Veteran
Most of it has to do w/ the five in design itself. the Feb pixels are stacked on top of each other. By the time the bottom primary color acquires the info, not much is left compared to the top color.
When you I increase iso, u are actually turning up signal gain like u would do an audio amplifier. This causes noise due to higher sensor temp in normal Bayer based sensors. But combined w/ how the foveon in sensor is designed, my guess is that it is amplifying distorted color info due to not enough light getting to the middle and bottom color locations.
Anyway, that my theory.
Gary
When you I increase iso, u are actually turning up signal gain like u would do an audio amplifier. This causes noise due to higher sensor temp in normal Bayer based sensors. But combined w/ how the foveon in sensor is designed, my guess is that it is amplifying distorted color info due to not enough light getting to the middle and bottom color locations.
Anyway, that my theory.
Gary