Ian Grant said:No, guess they've just modified it to make it unique to them.
But it's interesting they are running a School of Photography, not one has an academic photography based qualification and they can't award any valid qualifications to their students either
petebown said:The mods include the use of Pyrocatechol instead Pyrogallol to make it less toxic...
petebown said:The mods include the use of Pyrocatechol instead Pyrogallol to make it less toxic. A few very slight changes have been made to the quanities of other ingredients in order to up the acutance and reduce the grain further than the original Pyrocat HD. The exact changes are known by the Blackthorn's founder lecturer Brian Walker ARPS, although he doesn't publish these changes.
With regard to the qualifications held by the Blackthorn's lecturers... All are either current or retired professional photographers. Which would you rather learn from??... An academic that has never taken a professional photograph or a real photographer? They are all either Associates of Fellows of the Royal Photographic Society. The Blackthorn Centre's web site clearly states that it does not offer any full time courses and offers courses aimed at amateurs and professionals interested in furthering their knowledge of the subject.
The Blackthorn Centre regulaly puts students forward for Royal Photographic Society awards and City & Guilds qualifications. How many schools do you know of that can acutally award qualifications themselves?
Pete Bown MPhys(hons), DipEd, LRPS
The Blackthorn Centre School of Photography's web designer and occational lecturer in Photography related IT
m_liddell said:I don't think there is anywhere else in the UK that sells it
Leon said:yes - pyrocat is short for pyrocatechol is it not ....? Definitely never seen a recipe for sandy's P'cat HD with pyrogallol in it.
sanking said:Those who point out that the formula for Pyrocat-HD has never contained pyrogallol are of course correct.
IMO, I would have already made that information available.
Bruce (Camclicker) said:So, where do we stand today in regards to to PYROCAT-HD? Is the formula published at Unblinking Eye the 'basic' formula from which all others have been derived? Or is there a published formula that has superseded the Unblinking Eye (maybe the eye blinked?) formula and considered 'generic'?
For the person who has never used Pyrocat-HD, what is the current, basic formula.... and where can it be found.
Thank you, that's what I hoped was the answer.sanking said:Therefore, if there is such a thing as an official Pyrocat-HD formula it is the one you will find at Unblinkingeye.
Tom Stanworth said:
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