Still Photo ISO Speed Settings

Set the ISO speed (image sensor's sensitivity to light) to suit the ambient light level. In Basic Zone modes, ISO speed is set automatically.

Setting with a dial

  1. Set the ISO speed.

    • With an image displayed on the screen, set by turning the Quick control dial 2 dial.
    • Select [AUTO] to set the ISO speed automatically.
    • When [AUTO] is selected, pressing the shutter button halfway displays the ISO speed actually set.
    • For details on the ISO Auto range, see ISO speed (recommended exposure index) in still photo shooting.

Note

  • ISO speed can also be set with the Quick control dial 1 dial by pressing the Multi-function button to select the ISO speed item while an image is displayed.

Setting from a screen of ISO speed options

  1. Tap the ISO speed display.

  2. Set the ISO speed.

    • Turn the Quick control dial 1 dial or press Multi-controller left or right to select an ISO speed. Registered values are also available.
    • You can register frequently used ISO speed setting values by specifying an option other than [AUTO] and selecting [Register].

Note

  • Can also be set from [ISO speed] in [Shooting: StillsISO speed settings].

  • Can also be set to [AUTO] by pressing the INFO button on the [ISO speed] screen.

ISO speed guide

  • Low ISO speeds reduce image noise but may increase the risk of camera shake and subject blur 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.

Note

  • To expand the manual ISO speed setting range from L (equivalent to ISO 50) to H (equivalent to ISO 102400), adjust [ISO speed range] in [Shooting: StillsISO speed settings] ().

Caution

  • Image noise (dots of light or banding) and irregular colors may increase and apparent resolution may decrease at H (equivalent to ISO 102400), because this is an expanded ISO speed.
  • Because L (equivalent to ISO 50) is an expanded ISO speed setting, the dynamic range will be somewhat narrower compared to the standard setting.
  • 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.
  • Normal image recording may not be possible under conditions that cause excessive noise, such as a combination of high ISO speed, high temperature, and long exposure.
  • If you use a high ISO speed and flash to shoot a close subject, overexposure may result.

ISO Speed Range When Set Manually

You can set the manual ISO speed setting range (minimum and maximum limits).

  1. Select [Shooting: StillsISO 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.

  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 P or Av 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.

    Auto

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

    Manual

    • 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.