Optika Italy IM Serie Manual De Instrucciones página 20

12.3 RPC observation
• RPC rings don't need a centering.
1. Place a specimen on the stage and focus it.
2. Check that the RPC ring and the objective match, and that
both are steadily set on a click stop.
3. While observing in the eyepiece, modulate the contrast of the
sample by turning the ring nut mounted on the slider. (Fig. 33)
• The image will take on a different three-dimensional effect
depending on the position of the slit.
• When using the RPC with the 4x objective, the use of the
diffuser filter is recommended (see section 10.8.8).
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F ig. 33 F ig. 33