From: William Clark <wclark@xxxxxxx>
I have a brief question. I have sitting in front of me a Vivitar 28 2.5
and
an Olympus 28 2.8. The aperture ring on the Vivitar can be set IN-BETWEEN
aperture values while the Olympus will only set itself at the specific
f-stops. A 35mm Vivitar also does this. Does anyone know why Vivitar
chose
to allow a more flexible aperture setting? Is this really more flexible?
I
have never really thought about it before.
I don't think it really is more flexible. Just the opposite really. I have a
manual macro flash setup that takes advantage of the ability to set the lens
to 1/3 and 2/3 of the way between stops. (This is admittedly NOT with a
28/2.8.) Half-stop presets would not be helpful to me.
Joel W.
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