At ISO51200 noise levels become strong would recommend avoiding setting possible , although results may still useful resized used web.Above ISO102400 best avoided noise extremely high , detail low.Colour saturation remains good , even ISO speed increases.ISO figure noise starts become visible : ISO12800 ISO figure noise overwhelms image : ISO51200 Interested ? Help support ePHOTOzine using links.Amazon UK Amazon US NIkon D780 The Nikon D780 offers exceptional image quality , excellent battery life , tough weather-sealed DSLR body.The camera offers extended ISO range , speeds ISO50 available , albeit reduced dynamic range recorded.Noise performance excellent ISO100 way ISO3200.It 's ISO6400 start see slight drop fine detail , drop detail ISO12800.Noise performance control ISO speeds remain excellent , generally low levels noise , `` fine grain '' look noise visible .