Pentax K100D Service Manual page 90

3. 11-point wide-frame AF to capture off-center subjects in crisp focus
The K100D's sophisticated SAFOX VIII autofocus system features 11 sensor points (with nine cross-type sensors
in the middle) to automatically focus on the subject with utmost precision, even when it is positioned off center.
The in-focus sensor point is automatically superimposed in red in the viewfinder for at-a-glance confirmation.
This high-precision AF system offers a choice of two AF modes: the conventional single AF, and the continuous
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AF, which maintains focus on the moving subject as long as the shutter release button is pressed halfway down.
4. Auto sensitivity control up to 3200 standard output sensitivity
The K100D features an auto sensitivity control function, which automatically sets the optimum standard
output sensitivity — up to 3200, which is the highest automatic setting in its class — based on such data as
the subject's brightness level and the lens' focal length. Since this function allows the use of higher shutter
speeds in poor lighting situations (such as indoor sports events and night scenes), it helps the photographer to
effectively reduce camera shake and prevent blurred images.
5. Upgraded standard software package
The K100D's standard software package consists of the PENTAX PHOTO Laboratory 3 that features the
reliable SILKYPIX image-processing engine (developed by ICHIKAWA SOFT LABORATORY) for RAW
data processing, and the PENTAX PHOTO Browser 3 that offers faster data processing speed and better
operability than the previous version.
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