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PowerShot SX170 IS Support
FAQs & troubleshooting

Setting the Aperture and Shutter Speed (PowerShot SX170 IS)

Content Id: 8201898400


In [ ] mode, you can Set your preferred shutter speed before shooting. The camera automatically adjusts the aperture value to suit your shutter speed. In [ ] mode, you can set your preferred aperture value before shooting. In this case the camera automatically adjusts the shutter speed to suit your aperture value. In [ ] mode, you can set both your preferred shutter speed and aperture value to obtain the desired exposure.

Blurred motion (Slow shutter speed)

Frozen action (Fast shutter speed)

Blurred background (With a low aperture f/number)

Sharp foreground and background (With a high aperture f/number)

Setting the Shutter Speed ([Tv] Mode)

1. Press the power button to turn the camera on.

2. Set the mode dial to [ ].

3. Turn the ⋖⋗ dial to set the shutter speed.

Caution

With shutter speeds of 1.3 seconds or slower, there will be a delay before you can shoot again, as images are processed to remove noise.
When shooting at low shutter speeds on a tripod, you should set [IS Mode] to [Off].
Maximum shutter speed with the flash is 1/2000 second. If you specify a faster speed, the camera will automatically reset the speed to 1/2000 second before shooting.
Orange display of aperture values when you press the shutter button halfway indicates that the settings deviate from standard exposure. Adjust the shutter speed until the aperture value is displayed in white, or use safety shift.

Caution

[ ]: Time value
To avoid exposure problems in [ ] and [ ] modes, you can have the camera automatically adjust the shutter speed or aperture value, even when standard exposure cannot otherwise be obtained. Press the ⋖⋗ button and set [Safety Shift] on the [ ] tab to [On]. However, safety shift is disabled when the flash fires.

Setting the Aperture Value ([Av] Mode)

1. Press the power button to turn the camera on.

2. Set the mode dial to [ ].

3. Turn the ⋖⋗ dial to set the aperture value.

Caution

Orange display of shutter speeds when you press the shutter button halfway indicates that the settings deviate from standard exposure. Adjust the aperture value until the shutter speed is displayed in white, or use safety shift.

Caution

[ ]: Aperture value (size of the opening made by the iris in the lens)
To avoid exposure problems in [ ] and [ ] modes, you can have the camera automatically adjust the shutter speed or aperture value, even when standard exposure cannot otherwise be obtained. Press the ⋖⋗ button and set [Safety Shift] on the [ ] tab to [On]. However, safety shift is disabled when the flash fires.

Setting the Shutter Speed and Aperture Value ([M] Mode)

1. Press the power button to turn the camera on.

2. Set the mode dial to [ ].

3. Press the ⋖⋗ button, choose shutter speed or aperture value, and then turn the ⋖⋗ dial to set the desired value.

An exposure level mark based on your specified value is shown on the exposure level indicator for comparison to the standard exposure level.
The exposure level mark is shown in orange when the difference from standard exposure exceeds 2 stops. [–2] or [+2] is displayed in orange in the lower right when you press the shutter button halfway.

Caution

After you set the shutter speed or aperture value, the exposure level may change if you adjust the zoom or recompose the shot.
Screen brightness may change depending on your specified shutter speed or aperture value. However, screen brightness remains the same when the flash is up and the mode is set to [ ].
To have both the shutter speed and aperture value automatically* adjusted to obtain standard exposure, hold the shutter button halfway and press the ⋖ ⋗ button. Note that standard exposure may not be possible with some settings.

*Values may differ from those chosen in step 3.

Caution

[ ]: Manual
Calculation of standard exposure is based on the specified metering method.
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