That may be the reason for underexposure. Last evening, I've checked the
negatives and positives of evening and night scenes that were taken
under similar conditions with the same camera. Actually it was mostly the
positives that were underexposed. This makes me think that it may as well
be the exposure sensitivity curve of the film which makes this behaviour.
I have no idea about the exposure sensitivity-versus-time plots for
various films, though.
Omer Nezih GEREK
Electrical & Electronics Dept. email: gerek@xxxxxxxxxxxxxxxxx
Bilkent University, phone: 90-312-2664040 x 2480
06533 Bilkent, Ankara, fax : 90-312-2664307
TURKEY http://www.ee.bilkent.edu.tr/~gerek
On Tue, 3 Feb 1998 WKato@xxxxxxx wrote:
> In a message dated 98-02-02 11:50:05 EST, Omer Nezih Gerek wrote:
>
> > > As for the metering system of OM's, does center weighted
> > > average metering underexpose at very low light intensity levels?
> > > Surprisingly, the slides at dusk and dawn are perfectly exposed
> > > with slight underexposure (the overall intensity is lower than
> > > an average gray) which gives an excellent feeling.
>
> I've sort of observed the same thing. Maybe the diode that shines into the
> silicon cell to cut off exposure at 2-4 minutes also acts to decrease
> exposure times for very low light intensity levels.
>
> Warren Kato
> wkato@xxxxxxx
>
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