| 摘要 |
There is disclosed a lens-fitted photographic film unit preloaded with an unexposed photographic film. A light regulating filter is disposed between the photographic film and a shutter blade. Light from a subject is applied to the light regulating filter only when the shutter blade is opened. The light regulating filter is obtained by coating a base with an electrochromic material, and light transmittance thereof is changed depending on a voltage to be applied. When a photometric switch is turned on, a photometric circuit measures brightness of the subject. According to the brightness of the subject, a controller controls the voltage to be applied to the light regulating filter.
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