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30
OTHER FOCUSING METHODS
Distance scale
You
may find that in certain
situatiot1s it is easier
to
focus by
estimating the
distance to your
.
subject
,
then aligning the
corre-
sponding
figure
on the distance
scale with the index, such as
:
• When taking long exposures or
flash pictures when it is too dark
to focus through the
lens.
• If you want to prefocus on you r
subject, as in quickly shot candid
photos.
For
proper
focus
when
using
infrared
film,
first
focus
your
subject as usual with visible
light.
Attach a red filter and turn the
focusing ring to the right to align
the point of proper focus on the
distance scale with the small red
dot (or red "R" on
Me
and old-
type MD lenses) on the depth-of-
field scale. Set exposure according
to the film manufacturer's recom-
mendations.
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