Canon YJ12X6.5B IRS-A User Manual
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8. Repeat steps 3 to 7 several times until the object is brought into focus at both
the wide and telephoto ends.
9. After making sure that the object
is in sharp focus, tighten the flange
back lock screw.
The adjustment procedure is now
(NOTE): Use the Siemens star chart provided at the end of these instructions.
4-2. IRIS GAIN ADJUSTMENT
An iris gain adjusting trimmer is located
on the front of the lens drive unit.
The iris gain is properly set at the
factory. However, if you wish to change
the iris gain, adjust the trimmer through
the procedure described below.
1. Peel away the rubber cap which is