Help support ePHOTOzine using links.Amazon UK Amazon US Sony A7C For looking compact , full-frame , Sony mirrorless camera , A7C could great choice , particularly paired compact prime lens.Noise low lower ISO speeds.Some fine detail starts fade away ISO1600 / ISO3200.At ISO6400 's noticeable loss fine detail ( dust specs disappear ) .Detail drops ISO12800 , ISO25600 , however , noise appears well controlled , colour saturation remains good.Noise becomes dominant ISO51200.Above best avoided , noise becomes stronger still.Noise Reduction ( NR ) options Off , Normal , Low.We took shots default setting Normal.ISO figure noise starts become visible : ISO6400 ISO figure noise overwhelms image : ISO102400 Interested ? Help support ePHOTOzine using links.Amazon UK Amazon US Sony Alpha 7 IV Billed `` full-frame hybrid camera '' Sony A7 IV certainly lives potential .