Unable to Set the ISO Speed to "100"

Content Id: 8200332300

Solution

If the "C.Fn II -3 Highlight tone priority" custom function is set for your camera, the settable ISO speed (image sensor sensitivity) range will be 200 - 3200.

To set the ISO speed to "100", set this custom function to [0: Disable].

Please see the Instruction Manual that is supplied with your camera for details about Custom Function settings.

Caution

C.Fn II -3 Highlight tone priority

When "C.Fn II -3 Highlight tone priority" is set to [1: Enable], the highlight detail will be improved. The dynamic range is expanded from the standard 18% gray to bright highlights. The gradation between the grays and highlights becomes smoother.

With setting [1: Enable], noise in the shadow areas may be slightly more than usual.

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