| 摘要 |
PURPOSE:To automatically perform learning every time photographing is executed by changing a zoom program line, that is, performing the learning about zooming based on the variation of a focal distance in the case of zooming by a manual operation. CONSTITUTION:When a release switch S2 is turned on, the learning about zooming is performed by a microcomputer muC3 in a card. In the case that a sport card is used, for instance, the result of the learning is stored in an E2 PROM incorporated in the card as deviation DELTAf from the zoom program line of an original, and the deviation DELTAf is changed based on the variation DELTAf1 of the focal distance by the zooming by the manual operation at the time of turning on the switch S2. Since the deviation DELTAf obtained in such a way is used when the focal distance is obtained by the card thereafter, the zooming of APZ is performed based on a line which is obtained by wholly shifting the zoom program line of the original by the deviation DELTAf after learning, and the result of the learning is reflected. |
