Irix 11 mm f/4.0 User Manual

Extended User Manual – Irix 11 mm f/4.0
[
5
]
FOCUS SCALE CALIBRATION
You Irix lens has been engineered to exacting stan-
dards. The focus scale is factory calibrated and
should be accurate. In some cases, however, you
may nd that the innity mark on your lens does
not correspond to the optimum focus setting for
distant objects. While the focus ring will rotate past
the innity setting to allow you to compensate for
this, it may be more convenient to re-calibrate the
innity setting on your lens. You can make this ad-
justment yourself or contact the Irix support team
for help.
To calibrate the focus ring:
1. Remove the calibration window cover by unscrewing the T6
Torx screw and sliding the cover outward.
2. Set the focusing ring at the innity position and then rotate
the focus lock ring to the locked position. The internal calibra-
tion ring and small at head locking screw should be visible.
Note: The position of the calibration ring is maintained thanks
to the screws with a large at head. These screws must stay
screwed all the time.
3. Using a at head screwdriver, loosen the smaller screw on
the calibration ring. Be careful not to allow the screw to fall into
the lens housing. A screwdriver with a magnetic tip is recommen-
ded. Turn on the live view on the camera and then use a thin tip
screwdriver to turn the calibration ring clockwise or counterc-
lockwise until the correct focus on the plan is at least 15 meters
(49 feet) away.
4. Lock the calibration ring by re-tightening the screw and repla-
ce the calibration window cover.

Irix 11 mm f/4.0 Specifications

General

Brand	Irix
Model	11 mm f/4.0
Category	Lenses
Language	English