HP M417/M517 - Manual (Page 37)

37 Taking Pictures and Recording Video Clips
If there is not enough contrast or light in the focus region, try
using a technique called Focus Lock to focus on a higher-
contrast or brighter object about the same distance away,
and then, without releasing the Shutter button, point the
camera at the subject you were originally trying to
photograph (see the next section, Using Focus Lock). You can
also simply turn on more light, if that is possible.
Using Focus Lock
Focus Lock allows you to focus on a subject that is not in the
center of the picture, or to capture action shots more quickly
by pre-focusing in the area where the action will occur. You
can also use Focus Lock to help achieve focus in low light or
low contrast situations.
1. Frame the subject for your picture
within the focus brackets.
2. Press the Shutter button
halfway down to lock the
focus and exposure.
3. Continue to hold the Shutter
button halfway down while you
re-frame or adjust your subject
for proper positioning.
4. Press the Shutter button all the
way down to take the picture.