Chromatic Aberration Compensation (CAC)

CAC is a function that automatically corrects registration errors mainly caused by slight chromatic aberration, which cannot be corrected with lenses, and minimizes color weepage on the images.

What is the chromatic aberration?

Chromatic aberration means magnification ratio chromatic aberration. Magnification ratio chromatic aberration is caused by differences in the in red (R), green (G), and blue

(B)refractive indexes of a lens. The lens itself corrects chromatic aberration but the astigmatism remains in the surrounding area in particular. The zooming ratio, iris, and focal distance involves complicated chromatic aberration phenomena in a zoom lens. Images have registration errors.

B

G

R

Chromatic aberration compensation function

To correct the chromatic aberration, record the chromatic aberration characteristics of the lens for the zooming ratio, iris, and focal distance in the main unit of the camera- recorder and connect a lens suitable for these characteristics. Then perform the correction in accordance with the zooming ratio, iris, and focus distance of the lens. The CAC data for the following four kinds of lenses are stored in the unit at the time of shipment from the factory.

Indication on the unit

Supporting lens model No.

 

 

HA16X 6.3BERM-M58

HA16x 6.3BERM-M58

 

 

 

HA22X 7.8BERM-M58

HA22x 7.8BERM-M58

 

 

HJ17EX 7.6B IASE

HJ17ex 7.6B IASE

 

 

HJ22EX 7.6B IASE

HJ22ex 7.6B IASE

 

 

 

‹Note

Visit our Web site at the address given below for details on additions or changes to lenses supporting CAC.

http://pro-av.panasonic.net/

CAC operation

For the four lenses listed on the left

1 Install the lens on the unit and connect the lens connector.2 Open the CAC ADJ MENU on the MAINTENANCE MENU screen.3 Turn “ON” the CAC CONTROL.

If the lens product number recorded on the unit coincides with the product number of the connected lens, the CAC data stored in the unit are read out automatically.

< CAC ADJ >

 

# CAC CONTROL

:ON

CAC FILE DELETE

 

CAC FILE NO.

:01

TITLE SCROLL

:01

01:HA22X7.8BERM-M58 02:HA16X6.3BERM-M58 03:HJ17EX7.6B IASE 04:HJ22EX7.6B IASE 05:NO FILE

06:NO FILE

07:NO FILE

08:NO FILE

Confirmation of the CAC operation status

1 When the MENU is not displayed on the VF screen, pull the MARKER SEL, MODE CHK / MENU CANCEL switch.

If letters of the CAC are indicated at the left top of the viewfinder screen, the CAC is operating properly. If the letters of CAC are not indicated, the CAC is not operating.

2 Turn “On” the CAC item.

zThe menu item CAC is found in the <VF INDICATOR> screen on the VF page.

zThe letters of CAC are indicated in the left top of the viewfinder screen.

60IAVC-I 100

1080-59.9

CAC

3.2K

1A P 0dB

104 Adjustments and Settings for Recording : Chromatic Aberration Compensation (CAC)