Re: [OM] What lens to carry (again)

[Lex Jenkins]

Irrelevant, Tom.  But I think you knew that.  I appreciate your enthusiasm 
for a good debate, tho'.
Lex
===

> From: "Tom Trottier" <TomATrottier@xxxxxxxx>
> Subject: Re: [OM] What lens to carry (again)
> Date: Fri, 4 Aug 2000 03:31:05 -0400
>
> At 2000 August 4 - Friday 2:57, Lex Jenkins <olympus@xxxxxxxxxxxxxxx>
> spoke about *Re: [OM] What lens to carry (again)...* saying
>
> > Shouldn't be any difference in light transmission regardless of how a
> > polarizer is rotated.  What can vary is the light meter reading when a
> > linear polarizer is used on a camera that requires a circular polarizer
> > (like the Can-not-an-OM-on FTbn).
>
> Of course it should vary! Eliminating the sun reflection off a
> windshield could mean a couple of stops variation between one
> rotation position and 90 degrees away. The 1.3 stop suggestion is
> just an average for handheld, non-polarised lite meters.
>
> Theoretically, it should be 1 stop since you've eliminated 1/2 the
> energy by choosing the light waves energy component in just one
> direction. The other .3 is wastage in the filter.
>
> Think of it. If *all* the light were polarised in one direction,
> You'd get full transmission (less the wastage) at one rotational
> point and zero transmission 90 degrees away.
>
> Tom
>
> ...
> > >From: Robinsnes@xxxxxxx
> > >Date: Thu, 3 Aug 2000 22:02:08 EDT
> > >
> > >In a message dated 8/3/00 9:35:35 PM Eastern Daylight Time,
> > >Wayne.Harridge@xxxxxxxxxx writes:
> > >
> > > > Rotated out of the
> > > >  > position that cuts
> > > >  > glare, it's good for about 2-3 stops like an ND.  YMMV
> > > >  > depending on what
> > >I was under the impression that it was always a light loss of 1.3 stops 
> to
> > >adjust for the filter. Am I unaware of some changing variable?
> > >
> > >Roger Skully
> > >robinsnestphotography.com
> ------------
>  Tom Trottier <TomATrottier@xxxxxxxx> ICQ: 57647974
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