Photographic information indication device

Claim 1

A photographic information indication device for a camera with a diaphragm and a shutter and a view finder, comprising: (a) diaphragm setting means for manually setting the diaphragm; (b) diaphragm information generating means coupled to said diaphragm setting means to produce an electric signal corresponding to the set diaphragm; (c) shutter time setting means for manually setting the shutter; (d) shutter time information generating means coupled with said shutter time setting means to produce an electric signal corresponding to a set value of the shutter time; (e) light measuring circuit which produces an electric signal corresponding to the quantity of light coming from a photographic object, (f) photographic mode selecting means for selecting either a shutter time preference mode or a diaphragm preference mode in response to the operation of the diaphragm setting means, (g) a computation circuit coupled to the selecting means and the light measuring circuit for responding to the shutter time information generating means and the light measuring circuit and computing an appropriate diaphragm value when the shutter preference mode is selected, and for responding to the diaphragm information generating means and the light measuring circuit and computing an appropriate shutter time when the diaphragm preference mode is selected; (h) said selecting means alternately coupling one of said information generating means to said computation circuit; (i) analog indication means connected to the computation circuit and said diaphragm information generating means to indicate an analog value corresponding to the diaphragm information; (j) a digital indication means connected to the computation circuit and said shutter time information generating means to digitally indicate a value corresponding to the shutter time; (k) diaphragm controlling means coupled to the diaphragm information generating means and the computation circuit for operating in response to an output of the computation circuit in the shutter time preference mode and in response to the diaphragm setting means when the diaphragm preference mode is selected and (l) a shutter time controlling means coupled to the diaphragm information generating means and the computation circuit for operating in response to an output from the shutter time setting means in the shutter time preference mode and in response to an output of the computation circuit when the diaphragm preference mode is selected.