Using The Auto-Focus Lock - FujiFilm NEXIA 3100IXZ MRC Owner's Manual

In the following cases, the camera may not be
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able to focus on the subject. Such subjects must
be shot using the "AF-lock" or "Landscape Mode".
(refer to pages 21 and 33)
q A bright light source such as the sun is near the
subject or there is reflected light (from the
windscreen of a vehicle, waves, etc.) near the
subject.
w When shooting black light-absorbing subjects
such as hair.
e A mirror or light-reflecting surfaces such as
metals are near the center of the picture.
r There are gaseous substances such as flame or
smoke.
t Taking pictures through glass.

USING THE AUTO-FOCUS LOCK

In the composition shown above, the AF frame is off
Fig. 30
the subject (in this case, the people). In this state
the lens will not focus on the subject.
21