Olympus BHT Руководство по эксплуатации - Страница 17
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4. Focusing Procedure
Use the field of view eyepieces for focusing on the fi Im plane. Each field of view eyepiece
has a focusing front lens and a reticle with 4 frames, each frame indicating the area covered
by a specific power NFK photo eyepeice. (Fig. 22).
The number at each frame indicates the
magnification of the photo eyepiece. The
, : f ; ~ l
i,mage in the field of view eyepiece and the
i ' )
- - - -
image on the film plane are in focus at the
& . '
JJLll
same time. Several type field of view eye-
pieces are available, according to the film
size employed.
Fig. 22
1) Select the field of view eyepiece matching the camera back in use and insert i t into the
right eyepiece tube of the trinocular tube, aligning locating groove and locating pin.
2) While looking through the field of view eyepiece, rotate the eyepiece front lens in screw
mount to focus on the double cross lines in the field. For sharp focusing with objectives
4X or lower, the focusing magnifier FT is recommended.
Field of view eyepiece
Attachment camera
3) Bring the specimen detail to be photographed within the frame corresponding to the
power of the NFK eyepiece in use and focus on the specimen with the microscope fine
adjustment knobs. Make sure the light path selector knob on the observation tube is
either on the white (V) or yellow-green (CV) band.
PWH KIOX
3%"
x 4%"
Polaroid
Back
35WH K10X
35 mm Back
4) I t is recommended to tighten the tension adjustment ring considerably t o prevent the
stage from dropping during long exposures.
4X5WHKlOX
4" x 5"
Sheet Film or
Polaroid Film
Holder
MHWHKIOX
16 mm Bolex
camera
120 Roll Film
Holder