Olympus Camedia C-50 ZOOM Reference Manual page 76

● Higher ISO settings can produce more electrical noise.
● ISO is standardized based on the sensitivity of normal camera film. The
scale is approximate.
● When ISO is set to AUTO and you shoot in dark conditions without a flash,
ISO automatically increases; otherwise the shutter speed will be reduced,
possibly resulting in blurred images due to camera movement.
● If a subject is too far away for the flash illumination to reach it when the ISO
is set to AUTO, the ISO is automatically increased.
Note
ISO sensitivity
75