If you are using a separate light for the microscope:
Checking that the lowest power objective is clicked into position
and that the iris diaphragm is fully open, position the light in front
of the mirror and adjust the mirror's position (tilt and alignment) for maximum evenness of illumination. |
If you are using a microscope with a built-in light:
Check that the lowest power objective is clicked into position
and that the iris diaphragm is fully open. The view from the eyepiece should be evenly bright |