Nikon Photomic FTN Finder Instrukcja obsługi - Strona 18
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MEASUREMENT BY THE STOP-DOWN METHOD
With
the
following
lenses
and accessories
full-aperture
ex-
posure
measurement is not
possible,
either because the lens
has no au to-diaphragm or because the diaphragm will not
couple with
the Photomic
FTN
meter.
Therefore, the stop-
down
method
must be used
.
This
means measuring
exposure
with
the
lens
aperture
diaphragm
stopped
down to the taking
aperture. With
the
Photomic FTN finder,
the meter
coupling
pin
mu st first
be pushed
up
into
the finder
so
that the red
index
on
the maximum
aperture scale
springs to
f/
5.6.
Mount the lens
or
lens/accessory
setup
to the camera
and
switch on
the meter
in the
usual way.