John,
Thanks for your information.
I'll try & will take negative film shot as possible to avoid
overexposure with slide film.
--
Michael
An Olympus OM system fans
2007/7/27, John Hermanson <omtech1@xxxxxxxxxxx>:
>
> I haven't checked this in a while. OM-1/1N meter may be calibrated to a
> 2 series screen and a 50, errors start to creep in as you go longer and
> shorter. With 100mm lens, I think the error is about 1/4 stop. I used to
> detail this on my old website:
>
> "Error in OM-1, 1N can be adjusted out as it can in 2/2N (as part of an
> overhaul), though there may be some error in the needle indication
> starting with telephoto lenses due to the angle of light coming through
> the focus screen and how the cds cells on either side of the eyepiece
> lens see that light. This error starts to show with 100mm lens and
> increases slightly as the length of the lens increases. 100mm error
> causes about 1/4th stop overexposure. 180mm f2.8 lens sees a 2/3rd stop
> error and so on. No meter errors are encountered with these screens when
> used in the OM-2S, 3, 3Ti, 4, 4T, or 4Ti. "
>
> ___________________________________
> John Hermanson
> Camtech Photo Services, Inc.
> 21 South Lane, Huntington NY 11743
> 631-424-2121 | Olympus OM Service since 1977
> http://www.zuiko.com | omtech1 AT verizon dot net
>
>
> Moose wrote:
> > usher99@xxxxxxx wrote:
> >> Oops is right.? My comments apply to the OM2 and 2N's I have.? I should
> >> have remembered from the Odyssey 1N.?? Just when I thought I graduated
> >> from Zuikoholic 101.? Wanted to give a heads up on the changing
> >> compensation required for different focal lengths.
> >>
> > Well, I may have missed something all these years, but I'm not aware of
> > any exposure compensation required for different focal lengths on
> > OM-1(s) bodies. Using a two series screen ahould only require a simple
> > exposure compensation for the screen, but nothing for different focal
> > lengths. Or have I missed something?
> >
> > I certainly have no practical experience. I have 2 series screens in a
> > couple of 4 series bodies, but have never used one in a 1 or 2 series body.
> >
> > You aren't confusing this with the exposure compensation issues of using
> > OM lenses with adapters on E-thingies, are you?
> >
> > Moose
> >
>
>
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