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125
S
A The ISO Sensitivity Menu
ISO sensitivity can also be adjusted using the ISO
sensitivity settings option in the photo
shooting menu (0 293).
A ISO Sensitivity
The higher the ISO sensitivity, the less light needed to make an
exposure, allowing faster shutter speeds or smaller apertures, but the
more likely the image is to be affected by noise (randomly-spaced
bright pixels, fog, or lines). Noise is particularly likely at settings
between Hi 0.3 and Hi 5.
A Hi 0.3–Hi 5
The settings Hi 0.3 through Hi 5 correspond to ISO sensitivities 0.3–5 EV
over ISO 102400 (ISO 128000–3280000 equivalent).
A Lo 0.3–Lo 1
The settings Lo 0.3 through Lo 1 correspond to ISO sensitivities 0.3–
1 EV below ISO 100 (ISO 80–50 equivalent).
Use for larger apertures
when lighting is bright.
Contrast is slightly higher than normal; in most
cases, ISO sensitivities of ISO 100 or above are recommended.
A See Also
For information on choosing the ISO sensitivity step size, see Custom
Setting b1 (ISO sensitivity step value; 0 301).
For information on
using the High ISO NR options in the photo and movie shooting menus
to reduce noise at high ISO sensitivities, see pages 294 (photos) and 298
(movies).
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