| 摘要 |
PROBLEM TO BE SOLVED: To adjust the decentration of a lens easily and with high accuracy. SOLUTION: A first lens group G1 is held at an initial position by a section 13 for moving a lens to be adjusted. In such a state, a focusing adjustment chart 19 is photographed an image area sensor 22. Photographing of the focusing adjustment chart 19 is performed by changing the focusing position. The photographic screen of the focusing adjustment chart 19 is divided into 64 pieces of small divided areas of 8×8. An AF evaluation value is determined by each small divided area. The focusing position of a maximum AF evaluation value is determined by each divided area, made of adjacent small divided areas. A difference between the divided areas located at both ends in the right-and-left direction, in the photographic screen and a difference between the divided areas at both ends in the vertical directions in the photographic screen. Based on this differences, a decentration movement amount for reducing the differences is determined. Based on the decentration movement amount determined, the first lens group G1 of the lens unit 18 is moved from the initial position. COPYRIGHT: (C)2008,JPO&INPIT
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