Olympus BHTU Manual de instrucciones - Página 17
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Fig. 22
4. Focusing Procedure
Use the field of view eyepieces for focusing on the film plane. Each field of view eyepiece
has a focusing front lens and a relide with 4 frames, each frame indicating the area covered
by a specific power N FK photo eyepeice. (Fig. 22)
The number at each frame indicates the
magnification of the photo eyepiece. The
image in the field of view eyepiece and the
image on the film plane are in focus at the
same time. Several type field of view eye-
pieces are available, according to the film
size employed.
Field of view eyepiece
35WHK10X
PWHK10X
4X5WHK10X
MHWHK10X
35mm Back
3%" x 4%"
4" x 5"
16mm Bolex
Attachment camera
Polaroid
Sheet Film or
camera
Back
Polaroid Film
120 Roll Film
Holder
Holder
1) Select the field of view eyepiece matching the camera bSlck in use and insert it 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 on account of their considerable
depth of focus.
3) Bring the specimen detail to be photographed within the frame corresponding to the
power of the NF K 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
yellowijreen (eVI band.
4) It is recommended to tighten the tension adjustment ring considerably to prevent the
stage from dropping during long exposures.
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