Chapter 5 Preparation — Mounting and adjusting the lens

3Place the flange back adjustment chart approximately 3 m from the lens and adjust the lighting on the chart to obtain an appropriate image output level.

If the image level is too high, use the filters or the shutter.4 Loosen the F.f (Flange focus) ring clamping screw.

@@NOTE

ttF.b (Flange back) may be indicated on some lenses.

5Set the zoom ring to the telephoto position, either manually or by electric drive.

White shading compensation

6Aim the lens at the flange back adjustment chart and turn the distance ring to bring the chart into focus.

7Set the zoom ring to the wide-angle position and turn the F.f (Flange focus) ring to bring the chart into focus.

At this time, do not move the distance ring.

8Repeat steps 5 to 7 until the lens is in focus at both the telephoto and wide-angle positions.

9Firmly tighten the F.f (Flange focus) ring clamping screw.

Three optionally adjustable data items [USER1], [USER2], and [USER3] can be used for white shading compensation with the camera. Set these data items from the [SHADING SELECT] item on the setting menu [LENS SETUP] screen. Shading compensation is not performed when set it to [OFF].

@@NOTE

ttWhen white shading adjustment is performed while image is being disturbed due to the generator lock, adjustment may not be performed correctly. Try white shading adjustment again after the image returns to normal.

Selecting white shading data
1 Select the [SHADING SELECT] item on the setting menuffTo perform white shading adjustment, select either [USER1],
[LENS SETUP] screen, and press the jog dial button.[USER2], or [USER3].

 

 

 

For details, refer to “Setting menu basic operations” (page 118).

ffWith factory settings, no data is stored in [USER1], [USER2], and

 

 

LENS SETUP

 

 

[USER3].

 

 

 

 

 

 

 

 

LENS SETUP

 

 

 

 

 

 

 

OFF

 

 

 

 

 

SHADING SELECT

 

 

 

 

 

 

 

 

 

SHADING(USER)

 

>>>

 

SHADING SELECT

 

 

USER1

 

 

 

CAC

ON

 

SHADING(USER)

 

 

USER2

 

 

CAC PROPERTY

>>>

 

CAC

 

USER3

 

 

CAC CARD READ

>>>

 

CAC PROPERTY

 

OFF

 

 

CAC FILE DELETE

>>>

 

CAC CARD READ

 

 

 

 

 

 

 

>>>

 

 

 

CAC FILE INIT

>>>

 

CAC FILE DELETE

>>>

 

 

 

IRIS GAINLENS

 

CAC FILE INIT

>>>

 

 

 

 

 

 

 

 

 

IRIS GAIN

LENS

 

 

PUSH MENU TO RETURN

 

 

PUSH MENU TO RETURN

 

 

 

 

 

 

 

2 Use the jog dial button to select any one of [USER1], [USER2], [USER3], or [OFF], and press the jog dial button.

Adjusting the white shading

@@NOTE

ttColoring may occur in the vertical direction near where the lens aperture is open (OPEN) even when the white shading has been adjusted, but this is something that is inherent to optical systems and is therefore not indicative of a malfunction.

1Set the camera for adjustment.1)Mount the lens on the camera.ffMake sure to connect the lens cable.2)Set the shutter switch to OFF and the gain to 0 dB.

3)If the lens is equipped with extender function, release the extender function.

4)Check that either [USER1], [USER2], or [USER3] is set with the [SHADING SELECT] item on the setting menu [LENS SETUP] screen.

5)Select [EXECUTE] at the [SHADING (USER)] item, and press the jog dial button.

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