Re: [photo-3d] slides from negatives?

[Brian Reynolds <reynolds@xxxxxxxxx>]

Michael Galazin wrote:
> I've been wondering about something.  If you dupe a negative with more
> negative film, is the result a positive (e.g., a slide)?  I ask for 2
> reasons:
> 1] Sometimes I might shoot some negative film, then decide I'd like to make
> a slide of a particular image.

Doing this (with regular color negative film) will give you and a
complement of orange cast (I never remember color names).  The
original color negative has an orange cast (something that scanning
software will normally take care of).  By photographing it you will
get a negative of the orange cast (the complement of orange).

> 2] Much has been said recently about negative film's superiority to
> slide film in some regards.  The point of loss is in making the
> print.  If a slide could result by making a negative of a negative,
> I'm hypothesizing that the resulting slide would be superior in
> those same respects to an ordinary slide (assuming a high quality
> duplicating lens).
> 

The recent talk about negative vs. positive film was greatly
simplified, and made some huge assumptions.  Whether negative film is
better than positive film depends much more on what you want to do
with the final results than any individual charachteristic of either
type of film (or any specific examples of either type of film).

There is film available or duplicate negative to positive.  For one
thing that's how motion pictures are done.  You shoot on color
negative and then make a positive projection print.  John Rupkalvis
would be able to provide more details.

-- 
Brian Reynolds                  | "Dee Dee!  Don't touch that button!"
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