[alt-photo] Re: Creating Film Negative by Enlarging a Film/ Slide Positive

Philippe Ayral payral at gmail.com
Sun Jun 3 16:32:40 GMT 2012


You should find some informations there:
http://www.bostick-sullivan.com/articles/enlarged.html
Hope it will help.

2012/6/3 Diana Bloomfield <dhbloomfield at bellsouth.net>

> Gosh, Francesco-- all I know is that all your recent posts are making me
> feel very lazy and quite inadequate.  I'm all lazy down here at the beach,
> and the most I've been doing is running with my dog.  I guess I need to get
> busy doing something pertaining to photography.  Honestly, every post I
> read from you makes me feel lazier and lazier.
>
> As usual, I have nothing substantive to offer here, and if I did, I'm
> afraid it might include a conversation about digital negatives :0  . . .
> but on the face of it, I don't see why you wouldn't be able to expose
> positive film onto a larger piece of b&w negative film, and I imagine the
> higher (or lower) contrast depends on your ultimate choice of alt process.
>   ??
>
> Diana
>
> On Jun 3, 2012, at 12:11 PM, Francesco Fragomeni wrote:
>
> > I'm interested in enlarging positive film (any slide/ chrome film or B&W
> > reversal processed film) onto a larger piece of traditional B&W negative
> > film (not lith) for the purpose of producing enlarged negatives suitable
> > for alt-process and Azo. I know people do this but I've had a difficult
> > time finding a solid explanation and instructions for how to go about it
> > since it is far more common to scan these days which I am very aware of
> but
> > not interested in with this particular case.
> >
> > Basically, can I expose/ enlarge slide (positive) film onto regular B&W
> > negative film and achieve an enlarged negative? Is the higher contrast of
> > slide film helpful in this situation or a hinderance? Would it be better
> to
> > contact print B&W negative film (much lower contrast) onto another piece
> of
> > B&W neg film to produce a positive, develop to the same contrast as the
> > original, and then enlarge that lower contrast film-interpositive onto a
> > larger sheet of B&W neg film to achieve the enlarged negative?
> >
> > I'm interested in this specific process of enlarging film positives to
> > larger negatives, not the alternatives so lets please try to stay on
> topic
> > and not go astray with conversations of digital negatives, duplicating
> > film, etc., although if reversal processing your original B&W neg to
> > positive plays a role that might be worth explaining.
> >
> > Thank you!!
> >
> > -Francesco Fragomeni
> > www.francescofragomeni.com
> > _______________________________________________
> > Alt-photo-process-list | http://altphotolist.org/listinfo
>
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>



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Philippe Ayral
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