Samsung i70 Service Manual page 53

3) LENS SHADING
This menu adjust the brightness gaps between center of the lens and around the lens.
Required Equipment : AE TESTER(LV: 8.2, 3300K)
<How to adjust>
a...Download the adjustment file and save it to SD memory card.
b...Insert the SD memory card that has the program file and attach the camera to the AE TESTER.
c...Set the LV to 8.2.
d...Turn on the camera.
e...The adjustment will be done automatically.
f...After completed the adjustment, the camera is turned off automatically.
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Ⅲ. ADJUSTMENT