Leica M125 B Manuel D’Utilisation
Leica M series
User Manual
38
The iris diaphragm in the optics carrier of your
M series microscope has the same purpose as
those in a camera shutter: it regulates the avail-
able light, which changes the depth of field. The
"depth of field" (or "depth of focus") is the area
of a specimen that is brought into sharp focus.
M series microscope has the same purpose as
those in a camera shutter: it regulates the avail-
able light, which changes the depth of field. The
"depth of field" (or "depth of focus") is the area
of a specimen that is brought into sharp focus.
Closing the iris diaphragm
★
Close the iris diaphragm by turning the
knob to the left. The subject appears darker
and the depth of field increases.
knob to the left. The subject appears darker
and the depth of field increases.
Opening the Iris Diaphragm
★
Open the iris diaphragm by turning the
knob to the right. The subject now appears
brighter, but the depth of field decreases.
knob to the right. The subject now appears
brighter, but the depth of field decreases.
Iris Diaphragm