Owner's Manual

214
Adjusting the Camera’s Sensitivity to Light (ISO Sensitivity)
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The Photo Shooting Menu [ISO Sensitivity Settings] Option
ISO sensitivity can also be adjusted using the
[ISO sensitivity settings] item in the photo
shooting menu.
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High ISO Sensitivities
The higher the ISO sensitivity, the less light needed to make an exposure,
allowing pictures to be taken when lighting is poor and helping prevent
blur when the subject is in motion. Note, however, that the higher the
sensitivity, the more likely the image is to be affected by “noise” in the
form of randomly-spaced bright pixels, fog, or lines.
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“Noise” can be reduced by enabling high ISO noise reduction. High ISO
noise reduction can be enabled using the [High ISO NR] items in the
photo and movie shooting menus.