Nikon F50 - CASES WHERE AUTOFOCUS IS NOT ACCEPTABLE

CASES WHERE AUTO FOCUS IS NOT ACCEPTABLE
Autofocus operation depends on general lighting, subject contrast and
detail, and other technical points.
In those rare situations where autofocus
is not possible, • blinks inside the viewfinder.
• Very
dark subject
Focus manually (page 45). Or for
autofocus, focus on another,
brighter subject located at the same
distance, recompose with the
shutter release button lightly
pressed, then shoot.
You can also use the built-in flash,
or
an accessory Nikon Speed light.
44
• Low-contrast subject
Focus manually (page 45). Or for
autofocus, focus on another subject
at the same distance but with more
contrast, recompose with the
shutter release button lightly
pressed, then shoot.
When the focus brackets are
positioned
on the following
subjects/scenes, ignore
in-
focus. indication and focus
manually:
• Scenes with subjects
located
at different
distances
•
Bright subjects with a
shiny surface, such as
silver
or aluminum
• Strongly backlit subjects
•
When ·using a linear
polarizing filter, or a
special filter, e.g., a soft-
focus filter. (Circular
polarizing filters can
be
used for autofocus.)