Re: [OM] velvia exposure

[Jeff Keller]

I'm not doubting your statement that it is due to reciprocity failure...
but it instantly reminded me of color shifts I've seen from reflected
light. Its always amazing how a person's brain can auto compensate ...
so much for reality.
-jeff

----- Original Message -----
From: "Roger Wesson" <roger@xxxxxxxxxxxxxxxxxxxxxxx>


> Just a point of interest regarding Velvia - I find that it suffers
much
> more from reciprocity failure than any other slide film I've used.  I
do
> quite a lot of long-exposure photography so that's a concern for me.
> Two shots here show the effect:
>
> http://www.worldtraveller.f9.co.uk/travel/italy/photos/IT2-S2-38.jpg
> http://www.worldtraveller.f9.co.uk/travel/italy/photos/IT3-S3-02.jpg
>
> Taken a few minutes apart inside St Peter's in the Vatican a couple of
> weeks ago - metered using ISO 50 for both, exposures were about 2s and
> about 30s.  That heavy green shift in the longer exposure mars the
shot
> in my opinion.
>

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