ISO figure noise starts become visible : ISO6400 ISO figure noise overwhelms image : ISO25600 Interested ? Help support ePHOTOzine using links.Amazon UK Amazon US Canon EOS R6 The Canon EOS R6 great choice looking highly reliable camera great AF , great image quality.Noise low details highest lowest ISO speeds.Noise starts appear ISO6400 , fine detail starts drop , continuing go ISO range.Images may still usable ISO speeds ISO25600 perhaps even ISO51200 depending needs.We would n't recommend going beyond ISO51200 , although 's worth noting colour saturation remains quite good.ISO figure noise starts become visible : ISO25600 ISO figure noise overwhelms image : ISO204800 Interested ? Help support ePHOTOzine using links.Amazon UK Amazon US Leica M11 Rangefinder-style meets digital technology Leica M11 body.There photographers rangefinder comfortable , camera photographer melding utterly smooth working method .