Hi Ian,
At 2000 July 25 - Tuesday 10:10, Ian A. Nichols <olympus@xxxxxxxxxxxxxxx>
spoke about *Re: [OM] Om-2s received! (Looong!)...* saying
> On Tue, 25 Jul 2000, Simon E wrote:
>
> > >The 2N can use linear polarizing filters but the 2S requires circular
> > >polarizers,
> >
> > Only if you wish to use the TTL meter with the filter in place. For those
> > of
> > us who either meter with the filter off (to aid focussing - those 2 stops
> > make it pretty dark in there) or use a hand meter the additional cost of a
> > circ. polariser is irrelevant.
>
> I haven't tried this myself, so it may not work, but it seems to me that
> there are ways in which the TTL meter in a 2S(P)/4 with a linear
> polarising filter. "Misalignment" of the polarised light coming through
> the filter with the half-silvered mirror can only fool the meter into
> overexposure, but when there is no "misalignment", the reading will be
> correct.... so, whilst spot-metering off an evenly illuminated bit of
> subject, turn the filter to give the highest light reading. Now leave
> the filter there and meter from a bit of the subject that reflects
> randomly polarised light.
>
> If you need to meter from a part of the subject that is reflecting
> polarised light, do the same thing, only turn the whole camera around
> whilst metering, so that the polarised light looks the way you want -
> then compose the shot properly and turn the filter to where you want it
> to be.
>
> That should work, shouldn't it?
Or use auto. No fancy mirror squiggling things, no need for
"circular" polarisers.
PS - all my polarisers are round.
Tom
------------
Tom Trottier <TomATrottier@xxxxxxxx> ICQ: 57647974
Abacurial Information Technology Consulting
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