That diagram should have looked like a shrunken 2-4 screen.
John
John Hermanson wrote:
> >From the 4 up, they have one cell measuring in the floor and I'm not sure if
> it is SBC like a 2N. It looks a little like this only much smaller. The
> central dot is what measures spot in 4 series, 2S, 3 series. It compares
> central dot to outer field for ESP in the PC / 40.
> __________
> | |
> | O |
> |__________|
>
> John
>
> Terry and Tracey wrote:
>
> > >The cell which is used in the 2S, 4 etc for spot/average readings is also
> > used in
> > >the PC. In this case the central dot reading is compared to the
> > surrounding
> > >area. If a great difference in exposure is seen by the meter, ESP
> > compensates.
> > >
> > >John
> >
> > Does the PC/40 have a single SBC or 2 SBCs like the single digit OMs?
> >
> > Foxy
> >
> >
>
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