Leica M165 C B Manuel D’Utilisation

Page de 57
Leica M series 
User Manual 
46
The Different Types of Objectives
To meet the various requirements regarding 
imaging properties, there is a choice of high-
quality interchangeable planachromatic and 
planapochromatic objectives and also lower-
priced interchangeable achromatic objectives.
 
Achromatic objectives are particularly 
suited for specimens with high-contrast 
structures. 
 
Flat-field (planachromatic) objectives are 
particularly well suited for studying flat 
objects such as wafers and thin sections.
 
With planapochromatic objectives, the 
finest structures are visible with high 
contrast. The sophisticated apochromatic 
correction allows these objectives to attain 
the highest color brilliance and fidelity.
Achromatic objectives
The 0.32×, 0.5×, 0.63×, 0.8×, 1×, 1.5×, 2× 
achromatic objectives offer countless variants 
for selecting the object field diameter, magnifi-
cation ranges and working distances (see page 
54)
Planachromatic objective 1×
For the highest requirements for overall image 
quality, we recommend equipping the micro-
scope with the 1× plan (flat-field) objective, 
which returns sharp, contrast-rich object fields 
all the way to the border.
Achromatic objectives with a long focal 
length
For special applications, achromatic objectives 
with long working distances and focal lengths 
of f=100 mm to 400 mm are available.