Difficult subjects for autofocus – Canon EOS 620 User Manual
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9. Difficult Subjects for Autofocus
Although the AF system of the camera is very ac
curate, it is not'perfect The following subjects are
difficult for autofocus. When AF is impossible, the
green AF in-focus indicator will blink in the
viewfinder
Subjects
Low contrast subjects
(misty scenes, light-colored or white objects) .........................(A)
Subjects in extremely low-light situations
(a dark room, night scenes)............................ (B)
Subjects having generally horizontal patterns
(window blinds)..............................................(C)
Subjects in extremely strong backlight with
strong reflections
.................................................................. (D)
Subjects with an object in front of them
(caged zoo animals)................................... (E)
Fast-moving subjects
(difficult to keep within the AF frame).............. (F)
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