The camera’s sensitivity to light can be adjusted according to the amount of light available. The higher the ISO sensitivity, the less light needed to make an exposure, allowing higher shutter speeds or smaller apertures. Choosing Auto allows the camera to set ISO sensitivity automatically in response to lighting conditions; to use auto in P, S, A, and M modes, select Auto ISO sensitivity control for the ISO sensitivity settings item in the shooting menu (0 Auto ISO Sensitivity control).

Mode ISO sensitivity
i, j, % Auto
P, S, A, M 100–25600 in steps of 1 EV
Other shooting modes Auto; 100–25600 in steps of 1 EV
  1. Display ISO sensitivity options.

    Press the P button, then highlight the current ISO sensitivity in the information display and press J.

    P button

  2. Choose an ISO sensitivity.

    Highlight an option and press J.