Lens-fitted film unit

A lens-fitted film unit comprising photographic mechanisms including a taking lens, a shutter device and an aperture, and having been loaded with an unexposed photographic film,

• wherein the shutter device and the photographic film satisfying the conditional formula:
• log2(1/T)−log2(0.3×S)<−1.7
• wherein T represents a shutter speed of the shutter device and S represents an ISO speed of the photographic film;
• wherein the unexposed photographic film comprises at least two blue-sensitive silver halide emulsion layers with different photographic speeds, at least two green-sensitive silver halide emulsion layers with different photographic speeds and at least two red-sensitive silver halide emulsion layers with different photographic speeds, on a support;
• wherein at least one of the blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers with the maximum photographic speeds contains a silver halide emulsion in which 60% or more of the total projected area of the grains contained in the silver halide emulsion is occupied by tabular grains having an aspect ratio of 5.0 or more;
• and
• wherein, with respect to the silver halide emulsion contained in the at least one silver halide emulsion layer having the maximum photographic speed and containing the tabular grains, the grain number defined by the following formula (I) is 1.00 or less,
• grain number=AH/(Dc2×Th) (I)
• wherein
• AN:
• a silver coating amount in terms of silver of the silver halide contained in the layer with the maximum photographic speed (g/m2),
• Dc:
• an average equivalent circle diameter of the tabular grains contained in the layer with the maximum photographic speed (μm), and
• Th:
• an average thickness of the tabular grains contained in the layer with the maximum photographic speed (μm),
• provided that, when each of the at least one layer with the maximum photographic speed contains a plurality of silver halide emulsions which was prepared by separate production processes and which contains silver halide grains of different average equivalent sphere diameters, it is only required that the above limitations with respect to the aspect ratio and grain number be satisfied with respect to the emulsion having the maximum average equivalent sphere diameter.