1. Field of the Invention
This invention relates to a camera with a flashlight emitting device.
2. Description of the Prior Art
In recent years, cameras of the lens shutter type having a built-in flash device are on the market which include a zoom lens having a focal length which can be varied continuously. In a camera of the type mentioned, a flash coverage or irradiation angle of flashlight from the flash device is normally varied in response to a zooming operation of the zoom lens.
However, a camera wherein a flash coverage is varied in response to a zooming operation while a mode in which flashlight is ot emitted is selected by a user not only consumes power wastefully but also may make the user feel disagreeable. Besides, such camera is inconvenient to a user in that, upon use thereof, it can photograph an object only within a zooming range of the zoom lens.
Further, in a camera of the lens shutter type having a built-in flash device and including a zoom lens, after a flash coverage is varied in response to a zooming operation, a focusing operation of the lens is performed in response to completion of such zooming operation.
However, if a focusing operation is held inhibited while a flash coverage is being varied in response to a zooming operation, then so much time is required until initiation of photographing that a shutter chance may possibly be lost.
Meanwhile, in a camera of another type which has a built-in flash device and is capable of mounting an interchangeable lens thereon, a flash coverage of the flash device is fixed to a predetermined angle. Since such flash coverage is fixed in the camera of the type just mentioned, a certain focal length of the lens may result in unnatural exposure.
On the other hand, various cameras are also on the market which include an interchangeable camera and which control, when a flash device is mounted, the flash coverage of the flash device to a flash coverage corresponding to a focal length of the interchangeable lens in response to operation of a release button.
In a camera of the type mentioned just above, a change of the focal length of the interchangeable lens will not cause a variation of the flash coverage, and the flash coverage is not varied until the release button is operated. Accordingly, when it is intended to operate the release button suddenly to take a photograph, such photographing may be effected while the flash coverage remains in such a condition wherein it does not correspond to a current focal length of the lens. Such photographing may result in irregular flash coverage.
Also, cameras are on the market which have a built-in lens having a variable focal length and a built-in flash device having a variable flashlight irradiating range and wherein the focal length of the lens and the flash coverage of the flash device are varied in response to operation of a release button or of a focal length varying operating member such as a power zooming button.
In a camera of the type just mentioned, the lens and the flash device are connected mechanically to each other such that variation of the focal length and variation of the flashlight irradiation range may be performed simultaneously by a single electromagnetic driving means. Such mechanism can be realized with a camera which has a built-in lens and a built-in flash device. In the case of a camera which includes an interchangeable lens, however, it is very difficult to mechanically connect a lens and a flash device to each other particularly because different interchangeable lenses are interchangeably mounted on the camera.