Nikon SMZ18, Instruction Manual

Page: 55 / 124

Chapter 4
Functions and Operations of the Devices
41
2
Focus Units
The P2-FU Focus Unit having a manual focus knob and the P2-MFU Motorized Focus Unit are available as focusing devices.
In addition, the P2-FMDN Focus Mount is available for focus operations, and is attached to the support of the P-PS32 Plain
Stand.
2.1
P2-FU Focus Unit
The P2-FU Focus Unit consists of a square-type support and a
focus mount with the coaxial coarse/fine focusing system. The
focus mount is attached with the SMZ18 or SMZ25 Zooming Body
through the P2-RNI2 Intelligent Nosepiece or the P2-FM Focus
Mount Adapter. The square support is attached with the P2-PB
Plain Base, P2-DBL LED Diascopic Illumination Base or the
P2-DBF Fiber Diascopic Illumination Base. Three types of stands
can be configured.
Focus can be adjusted using the coarse/fine focus knobs on the
right and left of the focus mount. 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: 100 mm

Stroke per rotation of the focus knob:
Coarse control, 18.50 mm/rotation
Fine control, 3.27 mm/rotation
P2-FU Focus Unit
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
2 x
SHR Plan apo WD:20
Do not turn the knobs in the opposite direction!
P2-FU Focus Unit
(square support)
P2-FU Focus Unit
(focus mount)
Upward movement
Focus knob
(inner: coarse control/
outer: fine control)
Downward movement