| 摘要 |
<p>A lens hood (1) includes bellows (9) supported on an expandable folding frame (11). The degree of expansion of the frame in controlled, through a servo motor system (51), responsive to the position of the zoom ring of a zoom lens detected by means of potentiometers (62 and 35), so that the degree of expansion of the lens hood (1) is dependent on a degree of magnification of the zoom lens. <IMAGE></p> |
