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Re: [OM] 2 series screen quick question

Subject: Re: [OM] 2 series screen quick question
From: Rick Beckrich <rbeckrich@xxxxxxxxx>
Date: Fri, 7 May 2010 10:38:22 -0400
Maybe John has access to some Beattie screens?

On Fri, May 7, 2010 at 8:57 AM, John Hermanson <omtech1@xxxxxxxxxxx> wrote:

> Sorry, I don't have any.
> ___________________________________
> John Hermanson  |   CPS, Inc.
> 21 South Ln., Huntington NY 11743
> 631-424-2121  |  www.zuiko.com
> Olympus OM Service since 1977
> Gallery: www.zuiko.com/album/index.html
>
>
> Angel Lobo wrote:
> > Please, some 2 series screen (4 or 13) NEW for sale ?
> >
> > Angel Lobo.
> >
> > 2010/3/19 <usher99@xxxxxxx>
> >
> >> According to John, the correction for use in manual depends on focal
> >> length.  Even if the meter is adjusted  to read correctly for a
> >> 2-series on a 1N or OM-2N for a 50mm,  by 100mm there is a 1/4 stop
> >> overexposure indication and 2/3 of a stop on a Z 180/2.8.
> >> I believe there are errors on the short end too.  OTF metering is
> >> unaffected AFAIK.
> >>
> >> Mike
> >>
> >>
> >>
> >> So I know that the meter in an OM-1 and OM-2 will read 2/3 stop over
> >> correct exposure when a 2 series screen is installed (ie will
> >> underexpose by 2/3 a stop); and that the OM-2 measures all exposures
> >> at speeds slower than 1/45 second OTF in auto mode; my question is,
> >> will an OM-2n with a 2 series screen installed give accurate exposures
> >> at all speeds in auto mode, or will it only give accurate exposures at
> >> shutter speeds slower than 1/45 a second?  I have a modified 2-4
> >> screen that I would like to install in my OM-2n, but if it results in
> >> underexposure at faster speeds, I will put it in my OM-1n instead and
> >> simply compensate the 2/3 a stop by using the ASA dial.
> >>
> >> I happen to like the OM-2n's aperture priority, and don't really want
> >> to have to use it manual mode in bright light.
> >> --
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> >>
> --
> _________________________________________________________________
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>
>
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