----- Original Message -----
From: "Moose" <olymoose@xxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Sunday, 14 September, 2003 06:33 PM
Subject: Re: [OM] OM4 metering...
>
> I believe the highlight and shadow functions are unique to Oly and the
> OM-3 and 4 series, so there probably isn't much in the way of third
> party info on them. Their operation is pretty simple and logical.
> Ordinary exposure setting, average or spot, assumes that you want the
> area measured to come out as neutral grey (or its equivalent brightness
> in color). Pushing the Highlight button assumes that you want the
> measured area to be as bright as the film is capable of handling,
I am confused here. Pushing the highlighht button should be a necessity when
the spot metering has been taken off a subject that is significantly whiter
than middle grey, for example snow in bright sunlight. The highlight button
adds two f stops to the spot metered exposure. Conversely, the shadow button
decreases the spot metered exposure by 2 2/3 stops if the spot metering was
taken off a subject significantly darker than middle grey.
Contrary to what Moose says, I do not feel that the high light button
"assumes that you want the measured area to be as bright as the film
[can]......hand[le]". All the two buttons accomplish is to compensate for
spot metering that is significantly at variance with middle grey.
The two stop over exposure and 2 2/3 stop under exposure are cited in the
OM4T instruction book.
jh
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|