ISO 12800 show slight drop sharpness noise structure still good I would accept image point without hesitation.By ISO 25600 noise creeping , especially ISO 51200 noise increasing boundaries feathery appearance.However , compared many cameras , sudden loss contrast , boxes test chart remain well defined settings could used necessary.Overall , impressive.ISO figure noise starts become visible : ISO6400 ISO figure noise overwhelms image : ISO51200 Interested ? Help support ePHOTOzine using links.Amazon UK Amazon US Fujifilm X-E4 The Fujifilm X-E4 compact stylish camera , excellent looks.It 's also one smallest X-Series cameras available features 26mp sensor flagship X-T4.Noise lowest lower settings , fine detail maintained ISO800/ISO1600.As ISO speed increases fine detail lost , noise visible , however , would say noise `` film-like '' quality , n't disturbing noise .