Panasonic P2 HD Camcorder Operating Instructions - Page 104

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 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 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 camerarecorder 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 HA16X 6.3BERM-M58 HA22X 7.8BERM-M58 HJ17EX 7.6B IASE HJ22EX 7.6B IASE Supporting lens model No. HA16x 6.3BERM-M58 HA22x 7.8BERM-M58 HJ17ex 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/ 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. z The menu item CAC is found in the screen on the VF page. z The letters of CAC are indicated in the left top of the viewfinder screen. 60I 1080-59.9 CAC AVC-I 100 3.2K 1A P 0dB 104 Adjustments and Settings for Recording : Chromatic Aberration Compensation (CAC)