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Duplication Work and Photomicrography
In copy work, s side duplication, and photomicrography, you
must make exposure compensation with centerweighted
metering, because these types of photography represent
unusual contrast situations Some lenses automatically switch
the metering method to centerweighted. The table below shows
the relationship between specific types of photos and proper
exposure. Since this is meant to be only a guide, in practice you
should make further compensation by experimentation until you
achieve the proper results.
• The exposure compensation values listed below are
reference data obtained when genera/ purpose film was
used With color reversal film or microfilm for duplication
work, it is advisable to take additional shots with + one stop
exposure compensation as these films have very small
exposure latitude.
• To avoid vibration, you can make the exposure by turning
the illumination on and off
• It is advisable to use a cable release to eliminate camera
vibration.
Photographs and
pictures with con-
tinuous gradation
Copy work
Slide
duplication
Photo
micrography Prepared specimen Stop-down Approx. +1 stop Microflex PFX
Generally, results come out better
with more exposure in photomicrog-
raphy. The compensation value on
the eft is only a guide: determine the
compensation value by test shooting
Compensation not necessary
Micro Nikkor 55mm
f/2.8;
Cable release
For high contrast subjects, use of an
18% reflectance gray card in
determining exposure is
recommended With the card, no
exposure compensation is required
regardless ot whether the
background is black or white
RemarksRequired accessoriesExposure compensation
Method of
exposure
measurement
Subject
Approx. + 1 to + 2 slops ror
black letters on white
background: approx. -1/2 to -1
stop lor white letters on black
background.
Full-aperture or
stop-down
Documents and
drawings of high
contrast
Slide with continu-
ous gradation
Slide of documents
and drawings
photographed
Stop-down
Approx + 1 to +2 stops
Approx + t-1/2 to +2-1/2 stops
for black letters on white back-
ground.
0 to approx -1 /2 stop for white
letters on black background
Micro-Nikkor 55mm
f/2.8;
Nikon Slide Copying
Adapter PS-6:
Nikon Bellows
Focusing Attachment
PB36-
Cable release
When using Nikon Sl de Copying
Adapler PS-6, set the flood lamp
30cm away from its opal plate
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