US PATENT SUBCLASS 396 / 64
.~ Control of full open aperture value

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

63  DF  EXPOSURE CONTROL SYSTEM RESPONSIVE TO FOCAL LENGTH {1}
64.~ Control of full open aperture value

DEFINITION

Classification: 396/64

Control of full open aperture value:

(under subclass 63) Subject matter wherein the effective maximum aperture size is responsive to focal length.