Camera attachment operating device for setting exposure factor
US4021829A · kind A · utility
3Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1975 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Dec 5, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An operating device having an operating knob for the setting of an exposure factor such as shutter speed is provided on a camera attachment which is removably connected to a camera body, the device being coupled with the exposure factor setting or adjusting mechanism of the camera body. The knob can be locked at one or more predetermined positions thereof by a locking mechanism which is rendered operative when the device has been coupled with the camera body setting or adjusting mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.