Cyber-shot User Guide
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Top page > Using MENU items (Shooting) > MENU items (Shooting) > ISO

## ISO

Adjusts the luminous sensitivity when the camera is set to Program Auto or (Underwater) (DSC-W570/W580 only) in Scene Selection.

1. MENU (ISO) desired mode

| (Auto) | Sets the ISO sensitivity automatically.
| ////// | You can reduce image blurring in dark locations or with moving subjects by increasing the ISO sensitivity (select a larger number).

Adjusting ISO Sensitivity (Recommended Exposure Index)
ISO sensitivity is a speed rating for recording media that incorporates an image sensor that receives light. Even when the exposure is the same, images differ depending on the ISO sensitivity.
High ISO sensitivity
Records a bright image even in dark locations while increasing shutter speed to reduce blur.
However, the image tends to become noisy.
Low ISO sensitivity
Records a smoother image.
However, when the exposure is insufficient, the image may become darker.
Hints for preventing blur
Even though the camera is steady, the subject moves during the exposure and is captured blurred when the shutter button is pressed. Camera shake is reduced automatically, however, the function does not effectively reduce subject blur. Subject blur occurs frequently under low-light or slow shutter speed conditions.
In such case, shoot with the below tips in mind.

- Select a higher ISO sensitivity so that the shutter speed is faster.

- Select (High Sensitivity) mode in Scene Selection.

Note

- You can select only from [ISO AUTO], [ISO 80] to [ISO 800] when the shooting mode is set to burst mode, or when [DRO] is set to [DRO plus].

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