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Re: [OM] Half stops

Subject: Re: [OM] Half stops
From: John Hermanson <omtech@xxxxxxxxx>
Date: Mon, 16 Nov 1998 10:58:30 -0500
While the OM-1/1N shutter can be set between speeds, and it will fire, it is
defineltely NOT an intermediate speed.

John

KenK1ZYW@xxxxxxx wrote:

> Date: Sat, 14 Nov 1998 21:20:06 -0800
> From: "Peter A. Klein" <pklein@xxxxxxxxxx>
> Subject: [OM] Half stops
>
> Yes, Peter, the Oly works well between lens F-stops so you can 'message' the
> exposure very well - I do it all the time!
>
> Cheers
> Ken M.
>
> Someone mentioned the lack of 1/2-stop click points on OM shutters and
> lenses.  Do the electronics in the OM-1 and 2 work properly if you put a
> lens between "whole" stops?  How about the shutters?
>
> I understand that the answer may be different in manual vs. automatic mode.
> In Auto, the shutter can use any "in-between" speed for correct exposure.
> But will it understand if the lens is between f/4 and f/5.6?  I would
> suspect so, since it is using the actual light falling on the film when the
> lens is stopped down for exposure.
>
> But how about in Manual mode, where we're measuring light with the lens
> wide open?  A lens cam is telling the meter what f-stop the lens is set to.
>  Internally, is the smallest unit the meter can deal with a whole stop?
> Does the lens' f-stop cam continuously move a potentiometer or pulleys, or
> does it switch in a discrete resistor every whole stop?
> -
>
>






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