I can't see anything to comment on in the A200 pics, Boris, sorry.
As for the OM pics - why surely the scanner you used was making some
exposure calculation for itself? Is that not where the "exposure variation"
arises? More specifically, the leftmost frame would have been the most
dense, which the scanner would have overexposed to get back to something
like 18% gray on average. Or so it seems to me.
--
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Willie Wonka
Sent: 19 October 2005 14:46
To: olympus@xxxxxxxxxx
Subject: [OM] Conspiracy Theorists Needed (on topic)
I need to have a mystery solved, so please, put on the combined OM thinking
cap and generate some theories.
It seems that I am having exposure problems and can't really figure out why.
Look at this first image:
http://pg.photos.yahoo.com/ph/alienspecimen/detail?.dir=1b68&.dnm=7ae6.jpg&;.
src=ph
It consists of three exposures taken in order from right to left. I know
that some of you can't see it well after resizing. It was ok on my monitor
at home...
I stitched the three images in PS. If you see the original file, there is a
little difference where the first and the second image were blended, and it
is more than obvious where the second and third image were blended (the
right third of the cloud).
Why my images get progressively darker? This was taken as one image and
after the stitch, the previous one shoudav looked like it:
http://pg.photos.yahoo.com/ph/alienspecimen/detail?.dir=1b68&.dnm=b068.jpg&;.
src=ph
Both images were taken with the A200 and it was explained to me that the
cause is the white ballance, which was on Auto (actually I think this is the
very first image I took with this camera). I did believe this, but not
anymore.
Last night, I scanned some film. This is a composite of pictures taken with
my OM1 on Fuji Superia 400. It was the last picture taken before I left
Connecticut almost two years ago.
I did not stitch the images, so the amount of overlap can be seen. The
first image was the one on the left this time. Notice the pattern? The
first image is well exposed, and the second darker. Same as before, but
this time the difference is that in reality, I was going towards the
lightsource, i.e. the right portion should have gotten progressively lighter
as opposed to the first picture, where I started with the portion where the
sun is and left the darkest portion of the sky for last.
All I did was to turn the camera slightly to left or right, that's all. And
in the case of the OM, I don't have WB. And yes, in both cases I kept
constant aperture and shutter speed. As noted the only auto function was
the WB with the A200.
Anyone has scientific explanation?
Thanks
Boris
P.S. Here is the OM image:
http://pg.photos.yahoo.com/ph/alienspecimen/detail?.dir=1b68&.dnm=5f29.jpg&;.
src=ph
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