Photographic lens, camera body, and camera system
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United States of America Patent
Stats
-
Mar 10, 1998
Grant Date -
N/A
app pub date -
Jan 15, 1997
filing date -
Jan 24, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A camera system regulates electric power from a power supply within a camera body to a plurality of built-in actuators within a removable photographic lens. The actuators may include motors, solenoids, and the like which operate functions such as autofocus and image blur suppression. The photographic lens is equipped with a memory which stores data relating to the power supply characteristics of the built-in actuators. A transmission unit within the photographic lens transmits the stored data to a receiving unit within the camera body. A power supply characteristics measurement unit within the camera body measures data relating to power supply characteristics of the electric power supply while a determination unit determines whether to supply electric power from the electric power supply to the actuators in response to all of the data. A display unit on the camera body displays a warning when no electric power is supplied to the actuator.
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