Leica Biosystems M205A - Manual (Page 17)

Leica M series Manual 17
Leica engineers were careful to ensure that the
new M series—like its predecessors—remains
compatible with existing series. This means
that objectives, bases, tubes and so on can be
reused.
Objectives
All new objectives of the M series are parfocal,
meaning that when used with the objective
nosepiece, they can be replaced while keeping
the specimen in perfect focus.
If you prefer, you can continue to use the previ-
ous objective series. In this case, parfocality is
no longer guaranteed.
Tubes
The interface between the optics carrier and the
tube has remained the same, so existing tubes
fit the new M series. The new tubes are designed
for eyepieces with field number 23, while the
predecessor models were only designed for
field number 21, resulting in a smaller object
field.
Eyepieces
However, the new M-series eyepieces models
have an audible and tangible click to provide
immediate feedback in case of accidental
adjustment.
Maximum Compatibility