Re: sun vs exposure unit

From: Barb ^lt;[email protected]>
Date: 05/26/05-03:36:14 PM Z
Message-id: <>

Actually I live in Texas, so ok there. Also, am doing something a bit
different. I'm exposing photopolymer for art rubber stamps. I have an old
graphic arts light table that I use as an exposure unit (for both photo
processing and the rubber stamps)--I just replace the regular flourescent
bulbs with UV bulbs... but the bulbs were damaged during a move and I need
to be working between now and the time the new bulbs arrive. I really
appreciate your input!

One question: what process are you using?

Also, once process is posted, would someone please post their own times
with an exposure unit for the same process? That would be so helpful!
thanks again,

At 03:57 PM 5/26/2005, you wrote:

>I have to rely on the sun. I'm in Phoenix, so you'd think we'd have a lot
>of that, wouldn't
>you? Unfortunately it is unpredictable due to high thin clouds and
>haze/pollution. In
>December and January, there's often a cloud cover, and it can't be
>predicted, so coating
>paper for a schedule involves a crap shoot. Also, between mid May and
>about October
>1st, my brick-enclosed patio gets into the 150+ F degree range. The risk
>of melting
>things like, oh, negatives and Pictorico seems to be very real. I can't
>compare to UV
>because I'm still building my UV box; but times are fine, in the range of
>2-4 minutes
>depending on negative material, negative density, and print medium. Real
>film negs take
>longer, printed negs can be much shorter. The main problem with sun, even
>here in
>Arizona, really is variance - not only the season and the intense summer
>heat, but also
>the longer exposure times needed before about 11AM and after about 2PM -
>longer then
>and difficult to gauge. It's a real PITA. That's why I'm working on a UV
>box; but the sun
>is perfectly doable if you set your mind to it and happen to live in
>Arizona. :)
>On 26 May 2005 at 14:50, Barb wrote:
>Date sent: Thu, 26 May 2005 14:50:20 -0500
>From: Barb <>
>Subject: sun vs exposure unit
>Send reply to:
> > Does anyone use the sun rather than an exposure unit? I was just
> > wondering if anyone can tell me how it compares (time) to UV exposure
> > unit. If so, please include your location and the time of day you do
> > your exposures? Thanks so much, Barb
> >
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Received on Thu May 26 15:36:31 2005

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