US PATENT SUBCLASS 396 / 68
.~ Selective guide number

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

65  DF  EXPOSURE CONTROL SYSTEM RESPONSIVE TO DISTANCE {5}
68.~ Selective guide number

DEFINITION

Classification: 396/68

Selective guide number:

(under subclass 65) Subject matter including a manually adjustable member to input to the adjusting means a value related to the light output capability of an illumination means.