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

[Francesco Fragomeni]

I got some replies on APUG just after I sent this. Seems that many people
are doing this and enlarging slide (positive) film onto regular B&W neg
film is fairly straight forward and treated just like making a neg in
camera. Some use ortho film while others use regular panchromatic B&W film
for use with color slide in order to represents tone more accurately.
Development is done by inspection (which I already do) in both cases and
great enlarged negatives seem to be achievable.

If anyone here has experience with this or comments I'd still love to hear
your experiences!

-Francesco

On Sun, Jun 3, 2012 at 9:11 AM, Francesco Fragomeni
<fdfragomeni at gmail.com>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
>