- TECHNICAL
INFORMATION-contlnued-------
~
Duplication
Work
and
Photomicrography
In
copy work, slide duplication,
and
photomicro- - Since color slide film has narrow exposure latitude, it
is
graphy,
you
must make exposure compensation be- advisable
to
bracket your exposures, keeping the following
cause these types of photography represent unusual
in
mind:
contrast situations. T
he
table
at
the right shows the Increase the exposure
by
one stop for light-toned subjects
Decrease the exposure
by
one stop for dark·toned subjects
relationship between specific types of photos and the _
When
using microfilm for duplication work, it
is
better
to
proper exposure. Since these suggestions are only determine the exposure after experimentation.
This
is
true
intended
as
a guide,
you
should experiment until
you
because microfilm has very narrow exposure latitude; also
get good results. the results are easily affected by the film emulsion number
or
the conditions under which the film
is
developed.
38
- It
is
advisable
to
use a cable release
to
eliminate camera
vibration.
-
To
avoid vibration, you can make the exposure by turning
the illumination on and off.
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