The initial adjustment for spot may be off.
_________________________________
John Hermanson www.zuiko.com
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
_________________________________
----- Original Message -----
From: "Andrew Gullen" <andrew.gullen@xxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Friday, January 17, 2003 9:34 AM
Subject: Re: [OM] advice needed: SPOT meter reading differs from AUTO ongray
card??
> > Date: Thu, 16 Jan 2003 20:44:45 -0500
> > From: "John Hermanson" <omtech@xxxxxxxxx>
>
> > You'll find that spot meter reading will change depending on what lens
you
> > use. I think this was discussed here a couple of years ago. It is
noted in
> > the multi page repair manual list of "things the OM-4 does that people
may
> > think are defects, which cannot be fixed no matter what........."
Really!
>
> But a one-stop exposure difference is significant for slide film, so they
> can't both be right. One will be misexposed unless the camera changes its
> mind after the shutter opens (my OM-20 does that in auto for different
> reasons; it's annoying so I almost always shoot manual).
>
> > Date: Thu, 16 Jan 2003 20:45:50 -0600
> > From: "Gary L. Edwards" <garyetx@xxxxxxxxx>
>
> > and I know from lots
> > of Provia shooting that both achieve good, reliable, and consistant
> > exposures with all of my lenses, I conclude that John and Clint are
> > right: this is normal behavior, as well as acceptable performance.
> > I'd suggest further testing by exposing slide film on average
reflectance
> > subjects to convince yourself, if necessary.
>
> Did spot and averaging both work in auto and manual (four combinations)?
>
> > Date: Thu, 16 Jan 2003 22:32:02 -0500 (EST)
> > From: Mark Dapoz <md@xxxxxxxxxxxx>
>
> > Here's what the OM-4 service manual has to say about SPOT errors,
> > but I'm not really sure what it's saying!:
> > Since exposure degree is determined based on the light intensity
> > reduced by the preset, over-exposure results in to a degree
> > corresponding to the number of steps from open to stop-down position.
>
> Neither am I, but it sounds like it's saying that if your lens is f2 and
you
> shoot at f16 you'll get a 6-stop error. That can't be right, must be a bad
> translation.
>
> Regards,
> Andrew
>
>
>
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