Nikon SMZ18, Instruction Manual

Page: 59 / 124

Chapter 4
Functions and Operations of the Devices
45
2.3
P2-FMDN Focus Mount
The P2-FMDN Focus Mount is used exclusively for the SMZ18.
Adjust the focus using the focus knob.
The focus mount can be attached to various stands having a
support of 32 mm diameter.
Usage restriction
This focus mount cannot be combined and used with the P2-EFLM
Motorized Epi Fluorescence Attachment.
The figure shows the turning directions of the focus knob and the
corresponding vertical movements of the focus mount.
Turning the knob backward: Upward movement
Turning the knob forward: Downward movement

Focusing stroke: 65 mm

Stroke per rotation of the focus knob:
Coarse control, 18.50 mm/rotation
Fine control, 3.27 mm/rotation
P2-FMDN Focus Mount
Notes on turning the focus knobs

Do not turn (or twist) the right and left focus knobs in opposite
directions at the same time. Doing so may cause malfunction.

When the focus knobs reach their rotational limits for the unit’s
vertical movement, do not forcibly turn it further. Doing so may
cause malfunction.
1 x
SHR Plan apo WD:60
Do not turn the knobs in the opposite direction!
 Torque of the focus knobs
The torque of the coarse control knobs can be changed by
turning the torque adjustment ring on the base of the left
coarse focus knob using the tool supplied with the stand.
When the torque is too low, the vertical position of the
zooming body may slide due to various loads (such as its own
weight or the load of the counterbalance spring inside the
focus unit). Be sure to adjust the torque to an appropriate
level. Note that turning the fine control knob will cause the
coarse control knob to also turn, changing the torque of the
fine control knob.
1 x
SHR
WD:60
Plan
Apo
0.75
1
2
Adjusting the torque of the focus knobs
Focus mount
Upward movement
Downward movement
Focus knob
(inner: coarse control/
outer: fine control)
Torque adjustment
ring
Increase