ZEISS
5 First Operating Steps | 5.7 Adjusting the Transmitted-Light Phase Contrast or the Transmitted-Light
Darkfield using the Turret Condenser
5. Fully open the aperture diaphragm of the turret
condenser using its control lever (left limit
stop).
6. Adjust the illumination intensity as required.
7. To center the phase stop, remove one eyepiece and replace it with the diopter or telescope.
8. If necessary, center the phase stop from posi-
tion
A
to position
B
by turning the two
adjusting screws in the adjustment holes using
two Allen wrenches.
A
B
9. Afterwards, replace the diopter or telescope with the eyepiece again.
Info
For darkfield application, use the darkfield position of the turret condenser instead of the
phase contrast position.
Info
If the turret condenser is not equipped with a darkfield stop, contact an authorized ZEISS ser-
vice technician for installation.
Instruction Manual ZEISS Primostar 3 | en-US | Rev. 1 | 415501-7011-111_en
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