| 摘要 |
PURPOSE:To favorably adjust a focus at photographing by correcting a focus position worth of changed quantity of focal length when adjustment of the focal length of a zoom lens is completed, and adjusting the focus. CONSTITUTION:When the focal length of a zoom lens is changed from a long condition to a short condition, the focus position of a focusing lens 13 is adjusted based on a defined corresponding data memorized by a memory means 40, and a photographic object focused before change of the focal length is continued to be focused. When the focal length of the zoom lens 12 is changed from a short condition to a long condition, it is constituted so as to focus to the photographic object by automatic focusing. Namely, when the angle of view is adjusted with the zoom lens 12, the focusing condition is electronically maintained based on previously memorized adjustment information, and hence a mechanical focus position correcting means is given to a photographing lens 10. Hereby, the focus position of the zoom lens 12 can be corrected with a simple constitution. |
