Sofradir 1024-20C, User Manual

Page: 24 / 80

Page 24
4.5.2.2 Fixed Focus (50mm f/1.2 20° FOV)
Adjusting the 50mm Fixed Focus Lens:
1. Rotate the Focus Grip to adjust your focus.
2. When the desired focus is reached, insert the supplied lockdown screw ( replacement screw: Nylon Tip
18-8 SS Socket Set Screw 4-40 Thread, 1/8" Length McMaster part number : 90291A103 ) into the hole
circled below.
3. Hand-tighten the screw.
Note: Do not grip the Outer Lens to change
focus as it will not adjust the focus; it can
turn independently of the focus grip.
Special to the Athermal Lens:
You will notice that the Lens Baffle can
expand and contract up to a few millimeters.
When positioning your camera for use, be
sure to leave room for the Lens Baffle to
move freely in and out. Restricting the
fluctuation of the Lens Baffle will negatively
affect the Athermal functions of the lens.
Focus Grip Lens Baffle
Locking
thread