A-4
AUTOFOCUS
AF Control System: TTL-CT-SIR (Secondary Image Registration) phase
detection type using Cross-type multi-BASIS (Base-Stored
Image Sensor). Focus completion indicated by LED lamp
and audible beep (Lamp blinks at 8 Hz when autofocusing
is impossible; beep sound can be turned off)
Focusing Points: Five focusing points provided.
Focusing Point
Selection:
Selected automatically by camera or manually by user
Focusing Modes 1) One-shot AF:
At focus completion, AF operation stops, AF lock
occurs and the shutter release is enabled.
2) AI Servo AF:
AF system tracks moving subject until immediately
prior to exposure, includes predictive focusing function,
shutter release enabled at all times (however, predictive
focus control has priority in continuous exposure
mode); in-focus indicator does not light when focus is
achieved, but blinks at 8 Hz when autofocusing is
impossible.
3) Manual focusing:
Possible by setting the lens’ focus mode switch to “M”
and operating the lens’ manual focusing ring. In-focus
indicator lights up when focus is achieved (with EF
lenses having maximum aperture of f/5.6 or larger).
AF Working Range: DCS 520: EV -1 ~ 17 (ISO 200).
DCS 560: EV 0 ~ 18 (ISO 100).
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