More on Photography52Sensitivity (ISO equivalency) is the digital equivalent of film speed. The higherthe sensitivity, the less light needed to make an exposure, allowing highershutter speeds and smaller apertures. Much as film with a high ISO ratingtends to produce “grainy” images, high sensitivities may be associated with“noise”—randomly spaced, brightly colored pixels concentrated in dark partsof the image. Noise reduction ( 109) can be used to reduce noise in picturestaken at shutter speeds of slower than ¼ s.In (auto) and scene modes, the camera automatically raises sensitivitywhen lighting is poor. In P, S, A, and M modes, the following options areavailable:Option Description50Approximately equivalent to ISO 50. Recommended unless lighting is poor orfaster shutter speeds are required (e.g., when subject is moving). Noise mayappear in pictures taken at settings above this value.100 Approximately equivalent to ISO 100.200 Approximately equivalent to ISO 200.400 Approximately equivalent to ISO 400.AutoApproximately equivalent to ISO 50 under normal conditions; when lightingis poor, however, camera automatically compensates by raising sensitivity tomaximum of ISO 200 equivalent). ISO icon appears in control panel and shoot-ing display when sensitivity is raised.Sensitivity P, S, A, and M Modes OnlyTo choose a value for sensitivity:SENSITIVITY50200400100Auto2Display options.1SENSITIVITY menu displayed. ** In place of steps 2–4, selection can be made by rotating command dial ( ). Settingis displayed in control panel while command dial is rotated.SENSITIVITYSensitivity
