14
15
15
3.3.5
Hold the combination
gently with one finger
and turn the whole filter
ring around.
3.3.6
Keep your fingertip on
the head of the M4
Phillips screw to avoid it
from rotating while fastening the bolt.
Only for the AS
T
F / B
D
SF Bolts with 20mm diameter:
Each
bolt (with the safety straps already attached) must be mounted
with one additionally supplied stainless steel washer. Washers
are to be fitted onto the M4 screw between the centering bolt
and the white front ring. Make sure that the rounded side of the
washers faces the white front ring.
For other bolts:
Fasten the supplied bolts with the safety
straps already attached (see 3.2) at the M4 thread on the
opposite side without additional washers in between.
14
3.3.4
Make sure that the long hole is covered by the black
plastic washer at all times to not have unfiltered sunlight
entering the optics!
Correct:
Wrong:
Danger! Unfiltered
sunlight may enter
the optics
