[pure-silver] Re: PIQUED MY CURIOSITY; was Phenidone in alcohol
- From: "BOB KISS" <bobkiss@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 8 May 2009 08:27:23 -0400
DEAR BILL,
YOWZA! That is a great list! Thanks! I will try it soon.
CHEERS!
BOB
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of BILL WILLIAMS
Sent: Thursday, May 07, 2009 11:15 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: PIQUED MY CURIOSITY; was Phenidone in alcohol
The developer is DK-60a. A can makes 13.2 liters.
My times for development at 68 degrees F are:
Acros 100 9.5 mins
APX 100 8.5 mins
Delta 100 9.0 mins
Forte 100 9.5 mins
Forte 200 9.0 mins
Foma 200 8.0 mins
HP5 400 8.0 mins
Plus-X 125 8.5 mins
Tri-X 320 8.0 mins
Tri-X 400 8.0 mins
T-Max 100 10.0 mins
T-Max 400 8.0 mins
Panatomic-X 32 9.0 mins
Cannot find the time I had for Delta 400. The times have not been refined,
as has not the best ISO to rate the films at, but these times were the
results of at least 2 development trials for each. The negatives all
printed well for me on PWT or Multigrade IV without contrast filters.
And while I've been happy with the T-Max 100 which I shoot the most rated at
100 and developed for 10 mins, I'm going to try it at ISO 80 and develop it
for about 9 mins and evaluate.
--- On Thu, 5/7/09, BILL WILLIAMS <krbill_10@xxxxxxxxx> wrote:
> From: BILL WILLIAMS <krbill_10@xxxxxxxxx>
> Subject: [pure-silver] Re: PIQUED MY CURIOSITY; was Phenidone in alcohol
> To: pure-silver@xxxxxxxxxxxxx
> Date: Thursday, May 7, 2009, 3:50 PM
>
> I will verify later but I believe that the DK-60 I have is
> actually DK-60A.
>
> --- On Thu, 5/7/09, Richard Knoppow <dickburk@xxxxxxxxxxxxx>
> wrote:
>
> > From: Richard Knoppow <dickburk@xxxxxxxxxxxxx>
> > Subject: [pure-silver] Re: PIQUED MY CURIOSITY; was
> Phenidone in alcohol
> > To: "Pure-Silver Free" <pure-silver@xxxxxxxxxxxxx>
> > Date: Thursday, May 7, 2009, 1:50 PM
> >
> > ----- Original Message ----- From: "BOB KISS" <bobkiss@xxxxxxxxxxxxx>
> > To: <pure-silver@xxxxxxxxxxxxx>
> > Sent: Thursday, May 07, 2009 8:33 AM
> > Subject: [pure-silver] Re: PIQUED MY CURIOSITY; was
> > Phenidone in alcohol
> >
> >
> > DEAR BILL,
> > Thanks so much for the info below and looking forward
> to
> > any
> > film/time combinations you are willing to share. I
> > use
> > T-max 100, T-max
> > 400, Tri-X Delta 100 & 400, and HP-5 and Rollei
> Retro
> > films.
> > Any suggestions you can make would be great!
> > CHEERS!
> > BOB
> >
> > FWIW, DK-60a was a very active film developer
> > intended
> > for photofinishing and press work. I don't know the
> > difference between the original version and the "a"
> > version.
> >
> > Kodak DK-60a For Photofinishing and Professional
> > Photography
> > Water (at 125F or 52C)
> > 750.0 ml
> > Metol
> >
> > 2.5 grams
> > Sodium sulfite, dessicated
> > 50.0 grams
> > Hydroquinone
> > 2.5
> > grams
> > Kodalk
> >
> > 20.0 grams
> > Potassium bromide
> > 0.5 grams
> > Cold water to make
> > 1.0 liter
> >
> > Dissolve chemicals in order given.
> > Average development time in a deep tank about 7
> minutes at
> > 68F
> >
> >
> > Compare this with DK-50 which was in production until
> > fairly
> > recently.
> >
> > Kodak DK-50 For Professional Films and Plates
> > Water (at 125F or 52C)
> > 500.0 ml
> > Metol
> >
> > 2.5 grams
> > Sodium sulfite, dessicated
> > 30.0 grams
> > Hydroquinone
> > 2.5
> > grams
> > Kodalk
> >
> > 10.0 grams
> > Potassium bromide
> > 0.5 grams
> > Cold water to make
> > 1.0 liter
> >
> > Dissolve chemicals in order given.
> > For tank development of portrait negatives dilute with
> an
> > equal volume of water;
> > develop about 8 minutes @ 68F.
> > For tray development use without dilution; develop
> about 4
> > minutes at 68F.
> > For commercial use use without dilution; develop about
> 8
> > minutes in a tank or 6 minutes in a tray at 68F.
> >
> > Note: these are times for c.1947 films. The
> > difference
> > between "portrait" and "commercial" negatives is
> contrast.
> > At the time "commercial" negatives were developed to
> > perhaps
> > a paper grade or more greater contrast. These days
> most
> > films would be developed as "portrait" negatives.
> > In general the films of this and earlier
> > periods
> > required longer development times than modern films
> for
> > similar contrast. Because of this some of the older
> > developers develop too quickly for use with modern
> films.
> > DK-50 has half the amount of Kodalk (sodium
> metaborate) of
> > DK-60 and Kodak developing charts of the recent past
> that
> > listed it required it to be diluted 1:1. There is a
> > difference in diluting developer and modifying its
> > contents.
> > In the case of these two diluting them to get similar
> > activity leaves the DK-60 with less developing agents
> and
> > probably less capacity. Also, there may be an effect
> on
> > grain due to the relatively smaller concentration of
> salts
> > in the diluted DK-60, i.e., the diluted DK-60 will
> > probably
> > be grainier. The low sulfite is probaby also the cause
> of
> > the increased edge effects vis: acutance.
> > I suspect the amount of alkali could be
> > reduced even
> > further. By reducing the metaborate to around 2 grams
> and
> > increasing the sulfite to around 75 grams you have
> > something
> > along the lines of Kodak's motion picture negative
> > developer.
> > OTOH, Bill evidently has a lifetime
> > supply of the stuff and it does work in diluted form.
> >
> > --
> > Richard Knoppow
> > Los Angeles, CA, USA
> > dickburk@xxxxxxxxxxxxx
> >
> >
>
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>
>
>
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