P3D Re: slide film and contrast range

[Rob <lilindn@xxxxxxxxxxx>]

> 
> Dr T Asked:
> 
>  Can slide film
> be made with wider contrast range?


     It very likely could be, but the result would be a very dull slide
film!  In any film, there will be a finite range set by the transparency
of the base and the density of the dye layers.  In color negative film,
more stops of range can be carried in the negative because the contrast
is very low, in printing, the printing exposure determines which tonal
range is to be worked with and the paper will increase the contrast,
thus expanding the ranges (note that a print from a negative cannot
carry nearly as much range as the original negative did), so it is not
so much the fact that the negative films are negative that gives them
their greater latitude, it is the fact that the negative films are not
designed to be used as a final product.  A slide film with a wider tonal
range would, be definition, be one of lower contrast.  
> 
>
     (Bob Maxey wrote):
 George, Eastman Kodak has introduced a new Ektachrome film that is
supposed
> to be designed to produce extreme color saturation and contrast. Visit
> Kodak.com, as I do not know the name of the materials.

     The films are Elite Chrome Extra Color (consumer) and Ektachrome
Professional E100VS (professional).  Actually, in all likelyhood these
will be just the opposite of what George is asking about.  Slide films
with high contrast and saturation have always been admired for their
impact while vilified for their lack of latitude (e.g. original
Kodachrome, Dynachrome 10, and mre recently Velvia).
     Rob
     "Been shooting slides nearly 3/4 of my life"


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