RE: VDB

Loris,

When I did VDB (I now prefer Kallitype, more steps but much more flexible, good contrast control is possible) I also double coated to obtain acceptable Dmax,

Best,

Cor

> -----Original Message-----
> From: Loris Medici [mailto:loris_medici@mynet.com]
> Sent: donderdag 13 oktober 2005 9:59
> To: alt-photo-process-l@sask.usask.ca
> Subject: RE: VDB
>
>
> Add me to the list. I usually filter the Vandyke solution (using paper
> coffee filter) the day after mixing it. Even doing so, the emulsion
> shows further precipitation later (1 week after mixing, about
> 1/4 amount
> compared to the first precipitation). I filter it too. Much
> later, when
> silver plating occurs inside the bottle, I throw away the old emulsion
> and mix new sensitizer.
>
> BTW, I never managed to reach good Dmax with Vandyke by just
> one coat. I
> always double coat it. What is your experience? Do you get good Dmax
> with one layer Vandyke? If so, I will start to think I'm
> doing something
> wrong mixing it (I use directions given in Wynn White's article @
> unblinkingeye.com) - or my concept for good Dmax is a little bir
> exaggerated...
>
> Regards,
> Loris.
>
> -----Original Message-----
> From: Fabiano Busdraghi [mailto:fabusdr@yahoo.it]
> Sent: 13 Ekim 2005 Perşembe 10:43
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: VDB
>
>
> hi,
> I also use the liquid on top. Mixing the solution just before
> coating I
> had a grainy and uneven result.
> ciao
> fabiano
>
> --- "Weber, Scott" <sweber@mail.barry.edu> ha scritto:
>
> > Thanks for all of the replies, I think I isolated the
> problem. I was
> > storing the coated paper under plastic containers that were
> not light
> > tight. The paper was exposed to small doses of florescent light for
> > several hours. I do
> > have another question about the precipitate that forms in the
> solution.
> > Should I mix that into a suspension before coating or is it best to
> let it
> > settle and just use the liquid on top?
> > Thanks,
> >
> > Scott B. Weber
> > Associate Professor of Photography
> > Department of Fine Arts
> > Barry University
> > 11300 NE 2nd Avenue
> > Miami Shores, Florida 33161
> > (305) 899 4922
> >
> > -----Original Message-----
> > From: RHobbs3@aol.com [mailto:RHobbs3@aol.com]
> > Sent: Tuesday, October 11, 2005 8:26 PM
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Re: (no subject)
> >
> > I have used very old VDB solution succesfully, although
> little flakes
> > of silver seem to precipitate out of the solution.
> >
> > Rob
> >
> >
> >
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> > University - Miami Shores, FL (http://www.barry.edu)
> >
>
>
> HOME PAGE: http://fabiano.agriturismo-diavolino.com
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Received on Thu Oct 13 02:12:08 2005