P3D Nimslo exposure cure

[SHIELDS@xxxxxxxxxxxxxxxxxx]

Hi!

I have reached a conclusion about the Nimslo exposure problems I've
been having.

First of all, my last Nimslo roll just came back today with 100%
correct exposure on every shot. This is my same old Nimslo that
I have been using.

I have been shooting 200-speed film (Kodachrome 200) on the 100 setting, 
which is one stop off and pretty much a consensus among Nimslo users.

The METER CELL COLOR RESPONSE test shots were on the roll. They
were shot right after I took the camera out of a dark case, where
it had been for a week or so. I put three color patches, plus white,
on a medium blue sweater and on a medium yellow sweater. The color
patches and the white turned out with identical exposure. The camera
was very close to the color patches (using a 9" closeup lens) so
that the meter could "see" only the sweaters.

My conclusion is that the DARK CELL MEMORY phenomenon was responsible
for the exposure errors on the previous roll. The underexposures on
that roll showed distinct signs of that.

Since that roll, I have had the camera out in the light more, but
not a lot--I did not "sun" the camera! But I am thinking the DARK CELL
MEMORY problem only occurs when the camera has not been used for a long
time. So if you just get it out and use it every once in awhile this
will not be a problem.

Or maybe the camera might need a CLA. I'm posting information on that
separately, and it's good.

But I'm happy with this roll--very, very happy! The exposures are
_excellent_.

Mark Shields

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shields@xxxxxxxxxxxxxxxxxx
http://www.netcom.com/~northws1/stmatt.htm
"Let the little children come to Me," Jesus said, "and don't keep
 them away. The kingdom of heaven belongs to such as these."
  -Matthew 19:14



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End of PHOTO-3D Digest 3443
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