Sofradir 1024-20C, User Manual, Page: 23 / 80

Page 23
4.5.2 Fixed Focus (25mm & 50mm)
4.5.2.1 Fixed focus (25mm f/1.2 40° FOV)
Adjusting the 25mm Fixed Focus Lens
The fixed focus lens allows the option to unlock
and change the focus; then re-lock the lens in
place with the lock ring.
1.
While facing the camera, use
the grooves on the lock ring to
turn it counterclockwise in order
to unlock the inner lens.
2.
Rotate the inner lens to the
appropriate new location.
3.
While holding the inner lens in
place, use the grooves to turn
the lock ring clockwise until it
locks tight.
Important: Be careful to not overturn the lens; it will come off. Less than one full turn is required for the full range
of focus. The minimum focus is 2 meters; a closer focus can be achieved with caution. For hyperfocal distance,
focus the lens at 45 meters for focus from 25 meters to infinity. Focus the lens at 35 meters for focus from 17.5
meters to infinity.
Inner Lens
Lock Ring
Grooves