US PATENT SUBCLASS 396 / 224
.~ Photometer lock

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

213  DF  EXPOSURE CONTROL CIRCUIT {23}
224.~ Photometer lock

DEFINITION

Classification: 396/224

Photometer lock:

(under subclass 213) Subject matter having means to allow a camera operator to store a value indicative of a scene brightness which will be used by the exposure control circuit during a future exposure (i.e., AE lock).