Exposure control device for cameras

摘要

PCT No. PCT/JP81/00275 Sec. 371 Date Jun. 14, 1982 Sec. 102(e) Date Jun. 14, 1982 PCT Filed Oct. 9, 1981 PCT Pub. No. WO82/01424 PCT Pub. Date Apr. 29, 1982.A camera capable of AE-lock photography wherein an output of a light measuring circuit is stored in response to a manual operation at an arbitrary time prior to a shutter release operation, and exposure is controlled in accordance with the stored output. AE-lock switch is interposed between a light measuring circuit and a first storage capacitor, while a buffer circuit is interposed between the first storage capacitor and a second storage capacitor. Exposure is controlled in accordance with the charged voltage of the second storage capacitor. The above mentioned buffer circuit is connected with a switch means which supplies power for a given short period at an initial stage in conjunction with a shutter release operation whereby the second storage capacitor is charged to the voltage of the first storage capacitor during that given period.