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

[Paul Viapiano]

Of course, I was replying to Kurt, where I thought he was talking about making enlarged negs from negs. 

Just to clarify...;-)))

On Jun 3, 2012, at 2:18 PM, Paul Viapiano <viapiano at pacbell.net> wrote:

> Lith film interpositive is the most common method.
> 
> Reversal processing offers another alternative. 
> 
> On Jun 3, 2012, at 11:24 AM, Francesco Fragomeni <fdfragomeni at gmail.com> wrote:
> 
>> The above Bostick & Sullivan link doesn't give any relevant information to
>> this specific query. It discusses the use of lith film with an
>> interpositive process. This is a different process entirely but thank you
>> for the link.
>> 
>> Kurt, not much is said in the APUG link as of yet. Just confirmation that
>> people do it and it's fairly straight forward. Here is the
>> link<http://www.apug.org/forums/forum41/106283-creating-film-negative-enlarging-film-slide-positive.html>in
>> case you'd like to keep an eye on the thread as it develops.
>> 
>> -Francesco
>> 
>> 
>> On Sun, Jun 3, 2012 at 10:56 AM, Kurt Nagy <kakarott76 at hotmail.com> wrote:
>> 
>>> I'm also interested in the specific process for enlarging negatives.  All
>>> my work is traditional film and want to avoid scanning or printing anything
>>> digitally.  I do 4x5 Gum at the moment but was thinking of going up to 8x10.
>>> 
>>> Do you have a link to that APUG discussion?
>>> 
>>> 
>>> 
>>> On Jun 3, 2012, at 11:18 AM, Francesco Fragomeni <fdfragomeni at gmail.com>
>>> wrote:
>>> 
>>>> 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
>>>>> 
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