Search found 540 matches

by Keith Tapscott.
Thu Oct 03, 2013 12:45 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 17342

Re: Shelf life of Phenidone

Out of curiosity, what film are you using for night scenes?
by Keith Tapscott.
Thu Oct 03, 2013 12:41 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 17342

Re: Shelf life of Phenidone

I wanted to use POTA for a night scene where there was too little available light. There were lights in windows and street lights, but not enough. I shot 6 sheets. Two were done with PMK, 1 with Ilfotec-HC 1:31, and one stand developed with a diluted Ilfotec-HC. None worked. I got lovely highlights...
by Keith Tapscott.
Tue Oct 01, 2013 12:16 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 17342

Re: Shelf life of Phenidone

Hi all, I was attempting to develop a negative with POTA, which I mixed from chemicals on my shelf. It only has 2 ingredients: Sodium Sulfite and Phenidone. The Film Developing Cookbook says that it should have an orange color due to the oxidation of the Phenidone. My first batch was clear, so I th...
by Keith Tapscott.
Mon Sep 23, 2013 12:29 am
Forum: The Digitaltruth Forum
Topic: ILFORD PANF PLUS 50 X FOMADON R09
Replies: 6
Views: 11776

Re: ILFORD PANF PLUS 50 X FOMADON R09

I never found Pan F Plus to be particularly high contrast. I found an exposure of E.I.32 gave me better results than ISO 50 though.
D-76 diluted 1+1 provides excellent quality negatives.
by Keith Tapscott.
Thu Sep 19, 2013 6:10 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 12389

Re: Developers

Acuspecial was particularly interesting. Far better than Rodinal. http://www.photomemorabilia.co.uk/Paterson/Paterson_Acu_Range.html I have never used Acuspecial, but remember reading somewhere that this particular developer was an attempt by Crawley to make it behave similarly to Johnson's Definol...
by Keith Tapscott.
Tue Sep 17, 2013 5:52 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 12389

Re: Developers

Ornello wrote:
Has Paterson ceased making chemistry?
Yes, but they will continue to make darkroom products such as developing tanks, reels and trays etc as far as I know.

http://www.apug.org/forums/forum37/1227 ... icals.html
by Keith Tapscott.
Mon Sep 16, 2013 6:53 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 12389

Re: Developers

I had a discussion with a senior Ilford research manager over lunch on a visit to Mobberley back in the early 1980s and we touched on Paterson chemistry, what he had to say was quite an eye-opener. He'd been involved in the manufacture of Paterson chemistry as it was originally manufactered by Ilfo...
by Keith Tapscott.
Mon Sep 16, 2013 4:55 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 12389

Re: Developers

For medium- and large-format films, developers are not critical. DK-50, DK-60a and similar commercial developers based on a combination of metol and hydroquinone as developing agents were deservedly popular for decades. For miniature film, superior results were obtained from D-76, and later, Microp...
by Keith Tapscott.
Fri Aug 30, 2013 3:03 am
Forum: The Digitaltruth Forum
Topic: Rodinal, its true story and formula.
Replies: 35
Views: 72059

Re: Rodinal, its true story and formula.

For those who are interested in making their own Rodinal type developer for personal curiosity, here is a simplified formula designed by Patrick Gainer.

http://www.apug.org/forums/viewpost.php?p=398138
by Keith Tapscott.
Fri Aug 02, 2013 10:11 am
Forum: The Digitaltruth Forum
Topic: Fuji discontinue Neopan 400
Replies: 4
Views: 7486

Re: Fuji discontinue Neopan 400

If this is your regular film, buy as much of the existing stock as is practicable for you and store it in your fridge/freezer. It's always disappointing when a film is discontinued.
by Keith Tapscott.
Tue Jun 04, 2013 2:28 am
Forum: The Digitaltruth Forum
Topic: Is my Microphen formula correct?
Replies: 20
Views: 21847

Re: Is my Microphen formula correct?

By the way, Phenidone is used in Micro-PHEN (hence it's name )and requires hydroquinone as a super-additive agent. Phenidone on it's own has poor keeping and produces very low contrast without it.
by Keith Tapscott.
Tue Jun 04, 2013 2:17 am
Forum: The Digitaltruth Forum
Topic: Is my Microphen formula correct?
Replies: 20
Views: 21847

Re: Is my Microphen formula correct?

The formula for Microphen has never been in the public domain and neither has it's replenisher. Glycin is not mentioned in the MSDS. Ilfotec DDX and the dip & dunk developer Ilfotec DD take Microphen, Autophen and the published ID-68 relative to it's next logical stage as liquid concentrates. Microp...
by Keith Tapscott.
Mon May 13, 2013 4:20 am
Forum: The Digitaltruth Forum
Topic: Ilford ULF films for 2013.
Replies: 0
Views: 9154

Ilford ULF films for 2013.

For those who require unusual size sheet-film formats, click on the link below. HP5 Plus is also available in 122 and 127 rolls.

http://www.ag-photographic.co.uk/unusua ... m-29-c.asp