Re: Sorry to beat a dying horse, but more questions on lighting and Cyanotypes...

Well I think I read the articles pretty well, but whether or not I
understood them clearly is another matter..:)

Looks like the ballast plan is the best way to go...

Will have to do more research apparently.

Thanks for the info Loris.

-- 
Cheers,
Alex Swain (fo)
http://www.zoom.sh
On Thu, 16 Dec 2004 16:18:40 +0200, Loris Medici <loris_medici@mynet.com> wrote:
> Alex,
> Are you sure that you read the articles well? I guess you will have
> exposure times around 8 - 12 hours with these bulbs. You have to use BL
> tubes (or Philips '05 Actinic tubes if you're in Europe), with these
> bulbs placed 5cm (2") above the printing frame glass (1cm between each
> bulb is enough to provide an even illumination, 8 bulbs is enough to
> cover 60x40cm ~ 24x16") you will experience around 6 - 12 minutes
> exposure times (former: new cyanotype, latter: double coated classic
> cyanotype).
> Regards,
> Loris.
> 
> > -----Original Message-----
> > From: Alex Swain [mailto:fotoobscura@gmail.com]
> > Sent: Thursday, December 16, 2004 4:07 PM
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Sorry to beat a dying horse, but more questions on
> > lighting and Cyanotypes...
> >
> >
> > I have read a bunch of stuff about lighting Cyanos...Mercury
> > Vapor, Sodium Halide (?), Blacklights, etc on unblinkingeye,
> > other places...
> >
> > I have some "full spectrum" 48" fluorescent bulbs that
> > purportedly have a color temperature of around ~5000K.  I
> > have used them in the past for digital product photography
> > (which have worked great) and was
> > wondering if I can reuse them for cyanos.   These are GE bulbs from
> > Home Depot, nothing special.  I also have much more expensive
> > 5500K (again, purportedly) fluorescent screw-in type bulbs
> > which I can also use except they won't be as "even" and will
> > basically require a "rack" of them to light the area (i'm
> > doing 8x10's and bigger)
> >
> >
> > Thanks!
> >
> >
> > --
> > Cheers,
> > Alex Swain (fo)
> > http://www.zoom.sh
> >
> 
>