| 摘要 |
PROBLEM TO BE SOLVED: To prevent many peripheral subjects which are not viewed from being photographed and to prevent the subject from being unexpectedly photographed small by arranging a four-sided convex mirror by opposing it to the subject and specifying the ratio of an area where the subject can be viewed through the convex mirror with respect to a picture on a film. SOLUTION: The four-sided convex mirror 2 is arranged by being opposed to a subject. Besides, the area where the subject can be viewed through the mirror 2 is set to be 80% to 95% of the picture formed on the film by a photographing lens 1. Then, a unit is held by a left so that the lens 1 is made to face a photographer him/herself and a composition is decided by projecting the photographer him/herself at the mirror 2. Thus, the photographer him/herself can be photographed. Since the mirror 2 is fixed to the front surface, an error is reduced as a finder projecting the photographer him/herself. By setting the ratio of the area where the subject can be viewed through the mirror 2 is set to be high with respect to the picture on the film, that many peripheral subjects are photographed or the subject is unexpectedly photographed small is eliminated.
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