| 摘要 |
In a camera in which a 35 mm photographic roll film is used, a positive convex meniscus lens, the convex side of which faces an object to be photographed, an aperture diaphragm and a flare-stop facing an image side are provided. An image plane is curved toward the lens as the image plane advances away from the optical axis of the lens in the longer side direction of the focal surface. The following inequalities are satisfied: 26<=f<=32 f2/126<=F<=16 in which f represents the focal distance and F represents the F-number of the lens.
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