Leica M165 C B Manuel D’Utilisation

Leica engineers were careful to ensure that the 
new Leica M series—like its predecessors—
remains compatible with existing series. This 
means that objectives, bases, tubes and so on 
can be reused.

All new objectives of the Leica M series are 
parfocal. 

If you prefer, you can continue to use the previ-
ous Leica objective series. In this case, parfocal-
ity is no longer guaranteed.

The interface between the optics carrier and 
the tube has remained the same, so exist-
ing 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.

The new M series eyepieces have an audible 
and tangible click to provide immediate feed-
back in case of accidental adjustment.