Zeiss Auto Focus, Operating Manual

Page: 15 / 38

PRODUCT DESCRIPTION
Auto Focus equipment Selectable stages Carl Zeiss
06/2013 425131-7044-001 15
Objective magnification, primary capture range and precision of Auto Focus:
Objective
magnification
Max. capture range
in µm (highly
reflective plain
surface)
Maximum precision of the focus
position (exact)
(~0.3 depth of field of the
objective) in µm
Minimum size of
focused object in µm
1.25 > 12000 ~170.00 ~2000
2.5 > 10000 ~42.00 ~1000
5 > 10000 ~8.90 ~500
10 > 8000 ~2.50 ~250
20 > 4000 ~0.60 ~125
50 > 700 ~0.25 ~50
100 > 150 ~0.20 ~25
Table 2 Objective magnification, primary capture range, maximum precision and minimum object
size
The precision of the focus position of the Auto Focus varies depending on the type of objective, the
objective magnification and the optical characteristics of the sample.
The positioning accuracy and the speed of the Auto Focus vary depending on the type of objective, the
objective magnification, the optical characteristics of the sample and the work mode (see section 4.2 on
page 23) of the Auto Focus.
Appropriate HD, DIC, and pol objectives, and objectives with W 0.8 thread are also suitable.
Only EC Epiplan objectives (with magnification of 10x or less) and EC Epiplan-Neofluar objectives
(with magnification of 10x or less) on the list of objectives can be used for samples with a cover
slip.
2.5 Selectable stages
The Auto Focus equipment is compatible with all stages (manual / motorized) on the Axio Imager 2 with
motorized Z drive stand and Axio Imager Vario stand with focusing objective turret.