Exposure control device for photographic camera

摘要

In a photographic camera provided with an electric shutter speed control circuit including a light measuring circuit in which scene brightness information is log-compressed and memorized by a memory circuit, the information is log-expanded by use of a decoder. A pulse generator is connected with a flip-flop group so that the pulses from the pulse generator are counted by the flip-flop group. The output of the flip-flop group is log-converted by a decoder connected therewith. The log-converted output of the decoder is compared with the output of the memory circuit by a comparator.