IPC Subgroup
G03B 13/1 adjusting viewfinder field
Introduced: September 1968
Last revised: January 2021
Full Title
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras > Viewfinders > adjusting viewfinder field
Classification Context
- Section:
- PHYSICS
- Class:
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- Subclass:
- APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
2 direct subcodes
Child Classifications
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- G03B 13/12 to compensate for change of camera lens or size of picture
- G03B 13/14 to compensate for parallax due to short range