Adjust the camera's sensitivity to light.
Press the sensitivity dial lock release, rotate the dial to the desired setting, and press the release again to lock the dial in place.
|[A] (auto)||Sensitivity is automatically adjusted in response to shooting conditions according to option chosen for A[SHOOTING SETTING] > [ISO AUTO SETTING]. Choose from [AUTO1], [AUTO2], and [AUTO3].|
|[C] (command)||Rotate the front command dial to choose from [AUTO1], [AUTO2], [AUTO3], and values of from 80 to 51200. This range includes “extended” values of 80 to 125, 25600, and 51200. Note that “extended” values may reduce dynamic range or increase mottling.|
|160-12800||Adjust sensitivity manually. Selected value is shown in display.|
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 Sensitivity (A)
Use A[SHOOTING SETTING] > [ISO AUTO SETTING] to choose the base sensitivity, maximum sensitivity, and minimum shutter speed for the [A] position on the sensitivity dial. Settings for [AUTO1], [AUTO2], and [AUTO3] can be stored separately; the defaults are shown below.
|[MIN. SHUTTER SPEED]||1/500–1/4SEC, [AUTO]|
|[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 approximately equal to the inverse of the lens' focal length, in seconds (for example, if the lens has a focal length of 50 mm, the camera will choose a minimum shutter speed in the neighborhood of 1/50 s). The minimum shutter speed is not affected by the option selected for image stabilization.