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Difficult Subjects for Autofocus
This camera’s autofocus system can quickly focus most subjects with the high-precision
Multi-BASIS (Base-Stored Image Sensor) AF sensor equipped with five focusing points
as shown below. However, the system may have difficulty focusing the subjects listed
below. When autofocus is impossible, the green in-focus indicator will blink in the
viewfinder.
Low contrast subjects (misty
scenes, light-colored or white
objects)
Subjects in extremely low-light
situations (a dark room, night
scenes)
Subjects in extremely strong
backlight, or with bright spectral
reflections (shiny metal, snow, ice,
surface of a lake)
Subjects with an object in front of
them (caged zoo animals)
Subjects having generally
horizontal patterns (only when
using the center focusing point,
when using lenses with maximum
aperture smaller than f/2.8)
Subjects having generally vertical
patterns (only when using focusing
points other than the center)
Typical low-contrast subject
DCS 520 DCS 560
Cross Sensor
Position of individual sensor of BASIS