Pentax K-5 Operating Manual page 98

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• The sensitivity can also be changed by pressing the o button once, taking
your finger off the button and turning the rear e-dial (S). In this case, the
sensitivity is fixed when the o button is pressed again or the exposure
metering timer (p.118) elapses.
• When the exposure mode is set to B (Green), L (Shutter & Aperture Priority)
or C (Movie), the sensitivity is fixed to [AUTO] and the setting cannot be changed.
• When the exposure mode is set to K (Sensitivity Priority), a (Hyper-manual),
p (Bulb) or M (Flash X-sync Speed), the sensitivity cannot be set to [AUTO].
• When the exposure mode is set to p (Bulb), the upper sensitivity limit is ISO 1600.
• The sensitivity range can be expanded to a range of ISO 80 to 51200 when
[3. Expanded Sensitivity] in the [A Custom Setting 1] menu (p.91) is set to
[On]. However, the minimum sensitivity is ISO 160 when [Highlight
Correction] is set to [On] in [D-Range Setting] (p.214) of the [A Rec. Mode
3] menu.
• Captured images may show more noise if a higher sensitivity is set. You can
4
reduce image noise by setting [High-ISO NR] in the [A Rec. Mode 3] menu.
(p.98)
• You can select whether to set the sensitivity in increments of 1 EV or in
accordance with the EV step setting for exposure (p.120). This can be set in
[2. Sensitivity Steps] of the [A Custom Setting 1] menu (p.91).
Setting the Range of Automatic Sensitivity Correction
Set the range in which the sensitivity is automatically adjusted when the
sensitivity is set to [AUTO]. The sensitivity is automatically corrected in the
range of [ISO 100-3200] by default.
1
Select [ISO AUTO Setting] in the [A Rec. Mode 3] menu
and press the four-way controller (5).
The [ISO AUTO Setting] screen appears.
2
Press the four-way controller (5)
and use the four-way controller
(23) to set the minimum
sensitivity.
ISO AUTO Setting
ISOAUTO 100 - 3200
AUTO ISO Parameters
MENU