PHOTO RESEARCH SpectraDuo PR-680, User Manual, Page: 27 / 149

PR-680/680L User Manual
16
R
EMOVING THE
O
BJECTIVE
L
ENS
1. Grasping the rear rubber ring (see Figure 20 ) turn the lens counter-clock-wise until the
lens separates from the lens mount.
I
NSTALLING THE
O
BJECTIVE
L
ENS
1. Grasping the rear rubber ring (see Figure 20 ) turn the lens clock-wise until the lens seats on the lens
mount.
Warning: Hand tighten only! Do not over tighten as permanent damage may occur.