Nikon 2SB Photomic Buku Petunjuk - Halaman 28

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STOP-DOWN EXPOSURE MEASUREMENT

With some Nikkor lenses, full-aperture exposure mea-

surement is not possible, either because the lens has no

automatic diaphragm, or because the lens does not cou-

ple with the finder's meter; with certain accessories, too,

lens/finder coupling is not possible, thus, preventing full-

aperture measurement. However, the camera's Photomic

meter can still be used for exposure measurement via

the stop-down method. Before mounting the lens (or

accessory) on the camera body, push the meter coupling

pin up into the finder with a coin or similar object; when

set, the number

"5.6"

will appear in the finder's maxi-

mum aperture indicator. After

setting

the finder, mount

the lens or lens/accessory combination on the camera,

switch on the meter by moving the film-advance lever to

the standoff position, and then set the controls for cor-

rect

exposure

as follows:

For fixed-aperture lenses,

such as

Reflex-N i kkor lenses,

simply adjust

the

shutter-speed selector

until

the center

LED indicator comes

on.

For

convenience, shutter

speeds

can be

set at

intermediate

settings

in the 1/80

sec.

to 1/2000

sec. speed

range for precise

exposures.

If the

meter indicates con tinuous

overexposure,

use

neutral

density filter or

slower

film. If

continuous

under-

exposure

is indicated,

suppleme"

ntary lighting or

faster

film is necessary. This technique is

also suitable

for

photography using

a telescope or

microscope"