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Nikon Auto Extension Rings
Compact and lightweight, Nikon Auto Extension Rings slide on
and off your camera
in
seconds for a wide range of reproduc-
tion ratios. Models include the
PK
-
11A,
12
and
13.
Because
information on lens aperture
is
relayed via the
PK
ring to the
camera,
th
e exposure
is
determined by
TIL
full aperture
metering. Exposure modes usable: Aperture-Priority
(A)
Auto
Exposure or Manual
(M).
Nikon Bellows Attachment PB-6
Mounts between the
F4
and the lens for close-up and macro
photography.
At
th
e twist of a knob, you can vary lens exten-
sion
at
will, producing reproduction ratios from 1 :
1.1
up
to
4 : 1
with a 50mm lens mounted normally.
Th
e lens can also be
mounted in reverse to maintain aberration correction
in
the
extreme close-up range.
Th
e PB-6 has a stop-down lever so
you can use stop-down metering. Exposure modes usable:
Aperture-Priority
(A)
Au
to Exposure and Manual
(M).
98
Auto Extension Rings
PB
-6