| 摘要 |
PURPOSE:To prevent the drastic restriction of function provided in a camera body by providing a means for discriminating the mounting of a reflecting telephoto-lens, computing an exposure time by executing the arithmetic operation of exposure in case an interchangeable lens is not mounted at the time of mounting the reflecting telephoto-lens and displaying the exposure time and an open iris value from the interchangeable lens. CONSTITUTION:When the reflecting telephoto-lens ML is mounted, the computation of exposure in case the interchangeable lens 11 is not mounted is executed so as to compute only the exposure time Tv in an exposure arithmetic means 2 and the exposure time Tv from the exposure arithmetic means 2 and the open iris value Avo from the interchangeable lens 11 are displayed on an exposure display means 3. When usual interchangeable lens 11 is mounted, the arithmetic operation of exposure using the data of the open iris value Avo from the interchangeable lens 11 is executed in the exposure arithmetic means 2 and the iris value Av from the exposure arithmetic means 2 and the exposure time Tv are displayed on the exposure display means 3. Thus the restriction in case the reflecting telephoto-lens is used as the interchangeable lens can be reduced.
|
