EV adjustments???

[dosk]

I'm a little confused as to the EV adjustment dial on my ZX-M, and its
accompanying directions do not help much.
If I have aperture set on the camera at f4, and I set the adjustment to
(-)minus one (not 1/2), what will the equivalent new f-stop be?   (f3.5? or
f5.6?)

IOWs, does (-) adjust the amount of light that comes into the camera to a
greater or lesser amount?

Thanks,
Skip

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