Sony HVL-F32M Operating Instructions Manual page 23

When you replace the wide panel,
push it firmly as far as it will go.
• Do not pull out or twist the
wide panel forcibly. This may
damage the wide panel.
• Push back the wide panel and
the bounce sheet into the
inside of the flash head when
this flash unit is stored in the
supplied case.
Flash coverage & focal length
The larger the focal length
figure of the lens on a camera,
the further away a subject can
be photographed to take up
the full screen; but the area
that can be covered becomes
smaller. Conversely, with a
smaller focal length figure,
subjects can be photographed
with wider coverage. The flash
coverage is the area that the
light from the flash at a set
intensity or greater can cover
evenly, expressed as an angle.
The flash coverage at which
you can photograph is
determined by the focal
length.
By having flash coverage
determined in accordance
with focal length, flash
coverage can be expressed as
the figure for focal length.
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