At ISO102400 colour saturation drops , detail , 'd probably recommend setting used unless 're going resize process noise further.ISO204800 shows highest levels noise , low colour saturation , low detail , best avoided.You adjust noise reduction setting -5 +5 , half steps between.ISO figure noise starts become visible : ISO12800 ISO figure noise overwhelms image : ISO102400 Interested ? Help support ePHOTOzine using links.Amazon UK Amazon US Panasonic Lumix S5 The Panasonic Lumix S5 offers compelling option full-frame mirrorless camera market , obvious strengths 's offer videographers , offering better specifications features many full-frame mirrorless cameras price range.ISO50 ( Low ) shows reduction dynamic range , low noise.ISO100 ISO1600 show low levels noise good levels detail.At ISO3200 's slight drop fine detail .