1. A photomicroscope comprising an objective (3; 203) through which a light beam path passes, a camera port for attachment of a photographic still camera (11, 12; 211, 212), to which said light beam path leads from said objective, a shutter (10; 210) arranged in said light beam path, a video camera (14; 214) for recording a microscope image as a video image and generating output signals and a control switching device (26; 126; 226) for determining required exposure time of said photographic still camera (11, 12; 211, 212) in response to said output signals from said video camera and for opening said shutter for said required exposure time.