ISO Speed Settings for Still Photos

Set the ISO speed (image sensor's sensitivity to light) to suit the ambient light level.

For details on ISO speed when recording movies, see ISO Speed in Movie, Shutter-priority AE, and Aperture priority AE (movie) Modes and ISO Speed in Movie manual exposure Mode.

  1. Press the ISO button (Timer 06sec).

  2. Set the ISO speed.

    • Watch the top LCD panel or look through the viewfinder as you turn the Main Dial or Quick Control Dial dial.
    • “A” indicates ISO Auto. ISO speed is set automatically.

Caution

  • Image noise (dots of light or banding) and irregular colors may increase and apparent resolution may decrease at H1, H2, or H3 (equivalent to ISO 204800, 409600, and 819200, respectively), because these are expanded ISO speeds.
  • Because L (equivalent to ISO 50) is an expanded ISO speed setting, the dynamic range will be somewhat narrower compared to the standard setting.
  • Setting the ISO speed to L (equivalent to ISO 50) may result in loss of gradation in highlights of your shots, even if gradation is visible in Live View image highlights.
  • Setting [Shooting: Highlight tone priority] to [Enable] [Enhanced] () will prevent you from selecting L (equivalent to ISO 50), ISO 100/125/160, H1, H2, or H3 (equivalent to ISO 204800, 409600, and 819200, respectively).
  • When shooting with a high ISO speed, high temperature, long exposure, or multiple exposure, image noise (graininess, dots of light, banding, etc.), irregular colors, or color shift may become noticeable.
  • When shooting in conditions that produce an extreme amount of noise, such as a combination of high ISO speed, high temperature, and long exposure, images may not be recorded properly.
  • If you use a high ISO speed and flash to shoot a close subject, overexposure may result.

Note

  • Low ISO speeds reduce image noise but may increase the risk of camera/subject shake or reduce the area in focus (shallower depth of field), in some shooting conditions.
  • High ISO speeds enable low-light shooting, a larger area in focus (deeper depth of field), and longer flash range but may increase image noise.
  • Can also be set on the [ISO speed] screen in [Shooting: ISO speed settings].
  • Shutter sounds after the camera shoots may vary depending on the ISO speed setting.

ISO Speed Range When Set Manually

You can set the manual ISO speed setting range (minimum and maximum limits). You can set the minimum limit within L (equivalent to ISO 50) to H2 (equivalent to ISO 409600), and the maximum limit within ISO 100 to H3 (equivalent to ISO 819200).

  1. Select [Shooting: ShootingISO speed settings].

  2. Select [ISO speed range].

  3. Set [Minimum].

    • Select the [Minimum] box, then press SET.
    • Select the ISO speed, then press SET.

  4. Set [Maximum].

    • Select the [Maximum] box, then press SET.
    • Select the ISO speed, then press SET.

  5. Select [OK].

ISO Speed Range Used With ISO Auto

You can set the automatic ISO speed range for ISO Auto within ISO 100–102400. The minimum can be set within ISO 100–51200 and the maximum within ISO 200–102400, in 1-stop increments.

  1. Select [Auto range].

  2. Set [Minimum].

    • Select the [Minimum] box, then press SET.
    • Select the ISO speed, then press SET.

  3. Set [Maximum].

    • Select the [Maximum] box, then press SET.
    • Select the ISO speed, then press SET.

  4. Select [OK].

Note

  • The [Minimum] and [Maximum] settings will also function as the minimum and maximum speeds for ISO speed safety shift ().

Minimum Shutter Speed for ISO Auto

To prevent shutter speeds from being set too low automatically, you can set the minimum shutter speed for ISO Auto.

This is effective in Program AE or Aperture priority AE mode when shooting subjects in motion with a wide-angle lens, or when using a telephoto lens. It can also reduce camera shake and blurred subjects.

  1. Select [Min. shutter spd.].

  2. Set the desired minimum shutter speed.

    Automatically set

    • If you select [Auto], turn the Main Dial dial to set the difference relative to standard speed (toward Slower or Faster), then press SET.

    Manually set

    • If you select [Manual], turn the Main Dial dial to select the shutter speed, then press SET.

Caution

  • If a correct exposure cannot be obtained with the maximum ISO speed limit set with [Auto range], a shutter speed slower than the [Min. shutter spd.] will be set to obtain the standard exposure.
  • This function will not be applied to flash photography.

Note

  • When [Auto(Standard)] is set, the minimum shutter speed will be the reciprocal of the lens focal length. A single step from [Slower] to [Faster] is equivalent to a single stop of the shutter speed.