Canon DIGISUPER 27AF 手册

E7

This lens has a built-in encoder for a position sensor of 
zoom, iris and focus, and enables high-accuracy control and 
advanced for virtual interface. The correct position must be 
detected for these functions to operate correctly.
The ON [Auto]/OFF [Manual] setting of initialization can be 
set from the information display.

ON [Auto]

The lens is automatically initialized on power-up. 

(When in servo mode)

OFF [Manual]

After the power is turned on, position detection is 

performed when the lens passes the specific position 

(normally near the center) in the course of lens 

operation.

* Default setting at factory: OFF

For the detailed setting method, refer to the “

Operation Manual” at the end of this Operation Manual.

How to detect the position of ZOOM

ON (Auto)

When the power is turned on, the lens automatically 

detects the position. Then, it returns to the position

where it used to be when the power was turned on.

OFF (Manual)

Immediately after the power is turned on, the lens 

operates at a temporary position, and the position is 

corrected when the lens passes the specific position 

and the position is detected.

How to detect the position of FOCUS

ON (Auto)

Connected

When the power is turned on, the lens 

automatically detects the position. Then, 

it returns to the position instructed by 

command from the demand.

Not 

connected

When the power is turned on, the lens 

automatically detects the position. Then, 

it returns to the position where it used to 

be when the power was turned on.

OFF 

(Manual)

Connected

When the power is turned on, the lens 

automatically detects the position. Then, 

it returns to the position instructed by 

command from the demand.

Not 

connected

The lens does not automatically 

detect the position when the demand 

is not connected. When the demand 

is connected, the lens automatically 

detects the position. Then, it returns to 

the position instructed by command from 

the demand.

•  The position signal sent from the lens to the camera and 

its indication on the information display will be incorrect.

•  Iris is always initialized when powered on regardless of 

auto mode or manual mode.

•  During initialization, lens operation is disabled. After 

initialization is completed, the lens returns to the position 
where it used to be before initialization. However, if the 
lens is operated in the position servo mode, the lens 
moves to the currently controlled position.

•  The initialization operation can be enabled/disabled on 

the information display. When any initialization operation 
is changed, turn off then on the power for the changes to 
take effect.

The “Initialize Error!” message appears 

module is not mounted correctly, the lens is forcibly 

locked, or some other reason. 
In such case, check the lens condition, clear the problem, 
and then turn off and on the power again.

Initialize Error! message

Initialize

Error!

If the relationship between the image plane of the zoom 
lens and that of the television camera is incorrect, the object 
goes out of focus when the lens is zoomed. Follow the steps 
below to adjust the back focus of the lens.

  Select an object at an appropriate distance (XJ27x 

AF/XJ27x: 3 to 5 m, XJ100x AF/XJ100x/XJ95x Tele/
XJ95x/XJ86x AF/XJ80x/XJ76x/XJ60x: 10 to 15 m 
recommended). Use any object with sharp contrast to 
facilitate the adjustment work.

  Set the lens to 1x [status without using an extender].

  Set the iris fully open.

  Set the lens to the telephoto end.

F.B. Adjusting Knob

F.B. Lock Knob