| 摘要 |
An optical image of the subject is obtained by the finder unit. An image of the subject obtained by imaging is displayed on the display screen of an optical viewfinder. Looking through the finder unit, the user can see an image obtained by superimposing the image of the subject, which is displayed on the display screen of the electronic viewfinder, upon the optical image of the subject. The two images of the subject coincide when the subject is in focus and do not coincide when the subject is not in focus. The user can bring the subject into focus while looking through the finder unit to ascertain the degree of offset between the images of the subject. In cases such as excessive camera shake, the subject appears blurry. In response, the display of the image of the subject upon the display screen of the electronic viewfinder is halted. |
| 主权项 |
1. A camera comprising:
a lens barrel, which is provided on its periphery with a focusing ring being freely rotatable and incorporates a focusing lens, for adjusting the position of the focusing lens in accordance with rotation of the focusing ring; a solid-state electronic image sensing device for capturing the image of a subject, which is formed by the focusing lens, and outputting image data representing the image of the subject; a liquid crystal device, which is provided on the back of the camera, for displaying the image of the subject represented by the image data that has been output from said solid-state electronic image sensing device; an electronic viewfinder for displaying on a display screen an image within a desired AF target area in the image of the subject represented by the image data that has been output from said solid-state electronic image sensing device; a finder unit formed on the front of the camera and having an objective window facing a subject and an eyepiece window for looking at an optical image of the subject seen through the objective window via an optical viewfinder shutter; a deflecting unit, which is provided between the objective window and the eyepiece window, for introducing the image within the AF target area, which is being displayed on the display screen of the electronic viewfinder, to the eyepiece window; a display control device for controlling said electronic viewfinder so as to display the image within the AF target area on the display screen in such a manner that, if the image within the AF target area is out of focus, the optical image of the subject seen through the objective window and the image within the AF target area will be offset from each other, and so as to display the image within the AF target area on the display screen in such a manner that, if the image within the AF target area is in focus, the optical image of the subject seen through the objective window and the image within the AF target area will coincide; a motion determination device for determining whether the camera or the subject is moving an amount equal to or greater than a threshold value; and a shutter control device, responsive to a determination by said motion determination device that the camera or the subject is moving an amount equal to or greater than the threshold value, for closing the optical viewfinder shutter. |
