| 摘要 |
PURPOSE:To obtain precise exposure independent of the reflectivity of an object as for a camera having a reflection type exposure meter and an infrared active type range-finder. CONSTITUTION:(I1+I2) is obtained by processing a first current value I1 and a second current value I2 outputted from a PSD 5 by an addition circuit 14 and I1/(I1+I2) is obtained by a ratio arithmetic circuit 15. Based on them, the reflectivity (rho) of the object is obtained by an arithmetic control circuit 7. By the reflectivity (rho), photometry data which is light-received by a photometry element for EE 8 is corrected by the control circuit 7 and the precise exposure without receiving the effect of the reflectivity of the object is obtained. |
