Re: [Largeformat] Converting a camera to an enlarger

["Robert Lyman" <railroad@northweb.com>]

From: "Robert Lyman" <railroad@northweb.com>

Hi

I have never tried anything like this, but I wonder if it woud be worthwhile
to look into Aristo, or some other type of florescent source?  It would
certainly cut down on the heat.

Bob Lyman  ( railroad@northweb.com )
http://www.geocities.com/SoHo/Workshop/7610/
http://www.artists-in-residence.com/users/radiance/




----- Original Message -----
From: Frank Filippone <red735i@earthlink.net>
To: <Largeformat@onelist.com>
Sent: Wednesday, December 01, 1999 10:04 AM
Subject: RE: [Largeformat] Converting a camera to an enlarger


> From: "Frank Filippone" <red735i@earthlink.net>
>
> > >However, I have two major problems to solve:
> > >
> > >1. Heat. Especially with the reflector, the glass and the negative
> > >    get very hot with time.
> > >2. Uniformity of illumination. All types of bulbs I've tried so far
> > >    give a quite distinct fall-off towards the edges.
>
> You would have to build a light/mixing
> > chamber.
> > Something that was coated/painted bright white. I was thinking of
> > using thin
> > sheets of Styrofoam to line the inside of the light chamber, as
> > this would
> > help to diffuse the light even further.
>
>
> I don;t like the thought of the fan vibrations,  and the thought of
> styrofoam melting makes me scared of a fire......
>
> so my suggestion is to use THICK glass mirror material to line the
chamber.
> The thickness will act as a heat sink, and the reflector quality of the
> mirror will help to even out hot spots.  Make the box out of plywood.
>  Glue the mirror to the walls using silicone sealer for bathtubs, using
the
> plop technique.... a little plop here, a little plop there.  Opal glass is
a
> good final diffuser.
>
> Frank Filippone
>
> >