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ISO Sensitivity
Controls used:button + main command dial (monitor off )
“ISO sensitivity” is the digital equivalent of film speed. The higher the ISO sensitivity, the less light needed to make an exposure, allowing higher shutter speeds or smaller apertures.
ISO sensitivity can be set between values roughly equivalent to ISO 100 and ISO 1600 in steps equivalent to / EV. Values over 1600 are displayed as H 0.3 (ISO 2000 equivalent), H
0.7(ISO 2500 equivalent), and H 1.0 (ISO 3200 equivalent). (auto) and Digital
(auto) and Digital
ISO sensitivity can be selected by pressing the ISO button and rotating the main command dial until the desired setting is displayed in the control panel. ISO sensitivity can also be adjusted from the shooting menu ( 83).
High ISO NR (83)
The higher the ISO sensitivity, the more likely pictures are to be subject to “noise” in the form of randomly
7 — ISO Auto (
88)
This option can be used to enable automatic ISO sensitivity control in P, S, A, and M modes. Sensitivities of H 0.3, H 0.7, and H 1.0 are not available when ISO auto is on.
Reference: More on Photography (All Modes) / ISO Sensitivity 43