[ISO Setting]

[ISO-LO], [ISO 250], [ISO320], [ISO 500], [ISO640], [ISO 1000], [ISO1250], [ISO 2000], and [ISO 2500] can be selected.

Note---------------------------------------------------------------------------------------

[ISO-LO] is equivalent to ISO 100 ([Electronic Shutter] of Scene Mode is equivalent to ISO 125). However, the dynamic range gets narrower and the higher brightness levels make whiteout more likely to occur.

When [Auto] is selected and the flash is used, the sensitivity used will gain up to ISO 800 equivalent.

When [Auto] is selected and the flash is not used, the minimum and maximum values for the ISO sensitivity will be ISO 200 and ISO 400. ([Electronic shutter] in scene mode is ISO 250.)

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Ricoh A12 instruction manual ISO Setting