The selenium cell exposure meter is now coupled to a " setting wheel " located on the very bottom of the lens mount.
22.
The "'Minolta X-570 "'( X-500 in Europe ) was introduced in 1983 as a lower cost alternative to the match LED exposure meter.
23.
An aperture simulator for the exposure meter in the " Cyclops window " uses an iris in front of the selenium meter cell.
24.
In 1936 the "'Contax II "'and "'III "'models were introduced; the only difference between them was the integral exposure meter on the latter model.
25.
The incorporation of exposure meters in many cameras in the late 1960s eliminated the need to compute exposure, so APEX saw little actual use.
26.
The CdS exposure meter's aperture value proposal for the automatic aperture was visible through the finder, at the right side of the viewfinder image.
27.
The fixed-lens Type 019 Ausf I / Ausf II Retina IB featured an exposure meter, which was not included on the Type 018 Retina Ib.
28.
On an F3, F3 / T, and F3AF, they were used to communicate the exposure meter display information to the LCD inside the DX-1 viewfinder.
29.
However, this is now formally known as a personal sound exposure meter ( PSEM ) and has its own International standard IEC 61252 : 1993.
30.
The "'Contaflex Super "', launched the following year, was based on the Rapid and had a coupled selenium exposure meter on the front side of the prism.
