Setting ISO speed (PowerShot SX170 IS)
Solution
Raise the [ISO speed] to use a fast shutter speed when you wish to reduce the effects of camera shake or avoid blurry subjects, or to turn the flash off when shooting in a dark area.
IMPORTANT
- The following explanations are provided based on the assumption that the [Shooting Mode] is set to [Program AE] (
). - To set the [ISO Speed], it is necessary to set the [Shooting Mode] to one of the following modes:
- [Manual] (
), [Aperture Priority] (
), [Shutter Speed Priority] (
), [Program AE] ().
), [Aperture Priority] ( ), [Shutter Speed Priority] ( ), [Program AE] ().1. Press the <Power> button to turn the camera on.
2. Press <
>.
>.
3. The following screen appears on the LCD monitor.
Press the <>< 
> buttons or turn <
> dial until the desired [ISO speed]* is displayed.
The option you configured is now displayed. * Select the appropriate [ISO Speed] for the shooting environment.
If the camera shake warning icon (
) appears when you press the <Shutter Button> halfway, it is recommended to gradually raise the ISO speed in increments such as [ISO 80], [ISO 100], etc., and then set the [ISO Speed] when the camera shake warning icon () disappears.
) appears when you press the <Shutter Button> halfway, it is recommended to gradually raise the ISO speed in increments such as [ISO 80], [ISO 100], etc., and then set the [ISO Speed] when the camera shake warning icon () disappears.4. Press <
>.
>.| Guidelines for changing the ISO speed | ||
|---|---|---|
 | Automatically adjusts the ISO speed to suit the shooting mode and conditions. | |
  | Low High | For shooting outdoors in fair weather. |
  | For shooting in cloudy conditions, or at twilight. | |
 | For shooting night scenes, or in dark rooms. | |
5. If the following icon is shown, the setting is complete (when the [ISO Speed] is set to 400).
NOTE
- To view the automatically set ISO speed when the camera is set to [ISO Auto ] (
), press the shutter button halfway. - Although choosing a lower ISO speed may reduce image graininess, there may be a greater risk of subject blurriness in some shooting conditions.
- Choosing a higher ISO speed will increase shutter speed, which may reduce subject blurriness and increase the flash range. However, shots may look grainy.