CPC Subgroup
G03B 13/10 adjusting viewfinders field
Full Title
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras > Viewfinders > adjusting viewfinders field
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