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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.