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Adjust the camera's sensitivity to light.


Set sensitivity using A SHOOTING SETTING > ISO.

Option Description
AUTO1
AUTO2
AUTO3
Sensitivity is automatically adjusted in response to shooting conditions according to combination of standard and maximum sensitivity and minimum shutter speed chosen for A SHOOTING SETTING > ISO. Choose from AUTO1, AUTO2, and AUTO3 (aAUTO).
160–12800 Adjust sensitivity manually. Selected value is shown in display.
L (80)
L (100)
L (125)
H (25600)
H (51200)
Choose for special situations. Note that mottling may appear in pictures taken at H, while L reduces dynamic range.

Sensitivity is not reset when the camera is turned off.

When the drive dial is rotated to F (movie), the movie menu BMOVIE SETTING > FISO item will be displayed.

If desired, you can use D BUTTON/DIAL SETTING > COMMAND DIAL SETTING to configure the camera so that ISO sensitivity can be adjusted using the front or rear command dial.

Adjusting Sensitivity

High values can be used to reduce blur when lighting is poor, while lower values allow slower shutter speeds or wider apertures in bright light; note, however, that mottling may appear in pictures taken at high sensitivities.

AUTO

Choose the base sensitivity, maximum sensitivity, and minimum shutter speed for AUTO1, AUTO2, and AUTO3.

Options

Item Options
DEFAULT SENSITIVITY 160–12800
MAX. SENSITIVITY 400–12800
MIN. SHUTTER SPEED 1/500–1/4 SEC, AUTO

Default

Item AUTO1 AUTO2 AUTO3
DEFAULT SENSITIVITY 160
MAX. SENSITIVITY 800 3200 12800
MIN. SHUTTER SPEED AUTO

The camera automatically chooses a sensitivity between the default and maximum values; sensitivity is only raised above the default value if the shutter speed required for optimal exposure would be slower than the value selected for MIN. SHUTTER SPEED.

If the value selected for DEFAULT SENSITIVITY is higher than that selected for MAX. SENSITIVITY, DEFAULT SENSITIVITY will be set to the value selected for MAX. SENSITIVITY.

The camera may select shutter speeds slower than MIN. SHUTTER SPEED if pictures would still be underexposed at the value selected for MAX. SENSITIVITY.

If AUTO is selected for MIN. SHUTTER SPEED, the camera will automatically choose a minimum shutter speed fast enough to prevent blur caused by subject motion or camera shake (the minimum shutter speed is not affected by the option selected for image stabilization).