Sanyo VPC-HD1E - Manual (Page 46)

English
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Using the autofocus
The autofocus will work in almost all situations; however, there are
certain conditions that may cause the autofocus function to not work
properly. If the autofocus function is not working properly, set the focus
range to capture images (page 79).
k Conditions that may cause incorrect focus
The following examples are some of the situations where the autofocus
function may not work.
i Subjects with low contrast, very bright
subjects at the center of the image or
dark subjects or locations
Use the focus-lock function to lock the
focus on an object with contrast at the
same distance as the desired subject.
i Subjects without vertical lines
Use the focus-lock function to lock the
focus while framing the subject vertically,
then re-orient the camera to compose a
horizontally framed image.
The following examples are some of the situations where the autofocus
function may work, but not as desired.
i When both near and far objects are
present
Use the focus-lock function to lock the
focus on an object at the same distance as
the desired subject, then reposition the
camera to compose the picture.