P3D Nimslo Underexposure

[David Spacey <spacey@xxxxxxxxxxxxx>]

Hi All,

Mark Shields wrote about his exposure problems:-

>Been thinking about my previous posting on the Nimso exposure problems,
>and have noticed that on some shots there _appears_ to be an influence
>due to the color temperature of the light--very warm light, like late
>afternoon or early morning sunlight, or a yellow or orange flower,
>_seems_ to cause the underexposure some times.

I wouldn't be at all surprised if the photocell were much more sensitive
to red than blue, especially given the vintage of a Nimslo.  It may even
be measuring near infra-red.

Instead of an ND filter over the cell have you considered using a blue
one?  You could experiment with varying strengths until you find one that
usually works.  Perhaps a filter opaque to infra-red would be worth
trying.


Dave Spacey
____________________________________________________________________________

Walk tall, walk straight,
Spit the world right in the eye.

-Kevin Godley and Lol Creme


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