Zenith 12 XP, Управляющие элементы

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Set Film Speed
In the cut-outs in the Aperture Indicator Dial [15a] there are two scales for ferris
rated in ASA and DIN.
Set the speed of the film in use by turning the dial with the
small projection. Any intermediate positions may be used
and are proportionate
Point the camera at the subject, if outdoors with a bright
sky tilt it downwards somewhat. Also study the 'Helpful
Hint for Better Exposure' on page 14. Always ensure
Exposure Meter Window [15c] is not obscured in any way
when taking a reading.
With the camera still pointed at the subject turn the Shutter
Speed Indicator Dial [15b] until the ring of the Exposure
Meter Cursor [19b] is centered over the Exposure Meter
Needle [19a]. Read off possible combinations of speed and
aperture opposite each other on the two dials. Only those
speeds in white may be set directly on the camera; of the
others, 2-15 represent fractions of a second and are for
information only but the figures 1-30 are whole seconds
which may be used in a time exposure. Choose the most
suitable combination.
In extremely dim lighting, the Exposure Meter Needle [19a]
may rest near the right-hand edge of the transparent
window. Should this occur, place your hand close in front
of the Exposure Meter Window and watch the needle
carefully. If the needle moves when you block the meter
cell the exposure meter is able to function in the existing
light -remove your hand and determine exposure in the
normal way However, if no needle movement occurs-when
you place your hand in front of the meter cell the existing
light is insufficient and the exposure meter cannot be used.
In this event either a time exposure or use of a flash gun is
recommended.