| 摘要 |
PURPOSE:To make an exposure display and perform exposure control even before and during arithmetic by selecting one exposure value selecting means according to whether or not a focusing state is already outputted or not. CONSTITUTION:A 1st exposure value arithmetic means 3 calculates an exposure value from the output of a light measuring circuit 2 according to arithmetic algorithm and outputs the result of an exposure value selecting circuit 12. The exposure value selecting means 12 outputs the output of the 1st exposure value arithmetic means 3 when the output of a focusing state arithmetic means 8 is not outputted yet or the output of a 2nd exposure value arithmetic means 9 when the output is already outputted to an exposure control means 13. Then the exposure control means 13 receives the output to control a stop 14, a shutter 15, and a display means 16. Consequently, the exposure display and exposure control can be performed even before and during the arithmetic of a defocusing quantity. |
