Olympus BHT Instrukcja obsługi - Strona 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