Olympus VANOX-T - Page 39

Fig. 61
Fig.
62
4. Use of the automatic exposure lock button (LOCK)
In
the
automatic
mode,
pressing
this
button
enables
the
user
to
lock
the
exposure
time
(estimated
exposure
ti
asshown
on
the
LED
display
As
the
LOCK
button
is
pressed,
the
red
light
above
the
LOCK
button
flashes,
indicating
the
exposure
time
is
locked,
and
that
Y
be
exposed
in
the
semi-automatic
exposure
mode
due
to
the
built-in
memory
device,
Pressing
tho
button
again
releases
the
LOCK
mode
1) Panorama photography
If the same specimen is exposed repeatedly in different positions or
adiacent specimen areas are photographed and mounted to obtain
panorama photography, it is recommended to assure constant
background rendition and specimen contrast of each frame by
shooting at constant exposure time. Select the area where the
specimen details are evenly spread, and engage the LOCK
2
Combination use of the LOCK with spot measurement
11 the portion of 1 specimen, subject to spot measurement, is not
in the center of the field because of your desired framing
position,
engage
the
LOCK
as
the
portion
of
the
specimen
to
be photographed is brought into the center, then reframe it as
desired, before exposure, (Fig. 61)
3) Photomicrography at or close-to-max. exposure time
If the specimen requires the max, or close-to-max. exposure time
(refer to the table of Max, Exposure Time above) leg. in fluoro
cence, etc.) on auto mode the LED display sometimes changes into
‘underexposure’’ during the exposure time and the shutter d
se. To avoid this phenomenon, the LOCK is recom
ded.
5. Multiple exposures of 35mm film
Multiple exposures of the same frame can be made by releasing the
automatic film advance system in the following way
1) Press the multiple exposure button (NO WINDING) (D and asoor
tain that the light Ie blinking, (Fig. 62)
2) Release the shutter for multiple exposures as many times as you
wish without film advance,
% It is recommended to set the film speed at a higher value and
reduce exposure time 40 that overexposure can be avoided.
3) To advance the film, press the NO WINDING
multiple exposures are completed
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