網站這段 Outdoor daylight exposure Automatic cameras and electric exposure meters should be set for a speed value according to the film used (400 ASA). Without exposure meter, it is recommended to used an exposure time of 1/250 sec with different lens openings.
Indoor exposure Automatic cameras and electric exposure meters should be set for a speed value according to the film used (200 ASA). Without exposure meter, it is recommended to used an exposure time of 1/250 sec with different lens openings.