| 摘要 |
<p>PURPOSE:To use the titled lens for a variety of cameras in the same mount by providing three transmission elements which transmit three specific signals, i.e. signal of transition from the manual exposure mode of a stop to the automatic exposure mode, signal for specifying the open aperture value and minimum aperture value of the lens, and another signal for specifying the open aperture value and minimum aperture value of the lens. CONSTITUTION:A K mount equipped with an aperture value interlocking lever 2 associated with a stop ring and a stop lever 3 is provided on the rear surface of the lens. Further, a contact surface contacting a camera body includes the 1st signal transmission terminal 4 for informing the camera body side that the manual exposure mode of the stop is switched to the automatic exposure mode when the stop ring is moved to a specific position beyond the minimum aperture position, the 2nd signal transmission terminal 5 for transmitting a digital signal which specifies the open aperture value and minimum aperture value of the lens to the camera body side, and the 3rd signal transmission terminal 6 which transmits an analog signal which specifies the open aperture value and minimum aperture value of the lens to the camera body side.</p> |
