Representation of depth of field in camera
US5019852A · kind A · utility
12Cited by
4References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1989 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Mar 16, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In representing a depth of field in a camera, the depth of field is displayed on the basis of the magnitude of a field depth feeling Df, which corresponds to human feeling and sensitivity. The field depth feeling Df is obtained by processing at least one of a calculated depth of field, an object distance, a lens hyper-focal length, a diameter of a permissible circle of confusion, a lens aperture value and a lens focal length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.