To provide an extremely small electronic still camera.

In an electronic still camera with a photographing lens 1 and an image storing means 2, the lens 1 is the single focal distance lens of a fixed focus, the means 2 is a semiconductor memory or a flash memory and at the time of setting the focal distance of the lens 1 to be (f), an F number to be F, a half viewing angle to be ω, the diagonal length of a solid-state image sensing device 2 to be L and an interval between pixels to be S, an expression L≥2f.tanω, f2/(S.F)≤1000mm is satisfied.