I just loaded some Delta 3200 in my Rollei. I'll shoot it in the next couple of days and the develope it in Pyro TEA. Unfortunately, I won't have the new Epson scanner for a while as Epson isn't yet accepting "pre-orders" for the V-750. :>( Anyone using Pyro TEA? Scott --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Clayton Price <clay@...> wrote: > > > Hi All - > I'm a little late to this discussion but perhaps can add a little to > what Juraj has written. > Many years ago I was mixing Pyro formula from scratch but found that > PMK worked at least as well, > and came partially pre-mixed. I used it for all my fine art negatives > - 4X5, but mostly 120 and > 35mm. I love the staining of the shadow areas, which allows for much > better control of the highlights > without burning out shadows. Additionally, there's something in the > formula that slows the silver particles > from migrating into adjacent areas with less density. I don't remember > the technical explanation, but the > net result is sharper delineation. Depending on the subject and the > light, there can be a dramatic > improvement in prints. > > So 5 or 6 years ago, I started scanning some of those negatives, and > the results were terrific. Because the > stain is greenish. brownish, yellowish :-), my best results have been > scanning in RGB and as Jurj has mentioned, converting > to grayscale via channel mixing in Photo Shop. My logic for this is > that the green channel controls much of > the shadow detail you want to show through (since most of the stain is > in shadow areas). Also, one > would have to scan the negative as if it were a transparency - i.e.: > the scan comes up as a negative. > Only after working on it in channel mixer should it be inverted to > positive. That will take some experimenting > because it's so difficult to make tonal judgments looking at a negative > image, but IMO it's worth the trouble. > > As far as grain is concerned - I think there may be a little more grain > with PMK developers, but personally, I like > grain most of the time and never thought of it as a problem. > > On Mar 28, 2006, at 4:40 PM, > DigitalBlackandWhiteThePrint@yahoogroups.com wrote: > > > > > Message: 2 > > Date: Tue, 28 Mar 2006 16:34:56 -0000 > > From: "jurajlipscher" <juraj@...> > > Subject: Re: Scanning Pyro Negs? > > > > Hi Jules & Martin > > > > 1. There is a fairly extensive article on scanning pyro negatives and > > selectively using different color channels in the magazine 'Ag' No. > > 26. Here is their webpage with the possibility to order back numbers: > > http://www.ag-photo.co.uk/ > > > > 2. I have been working with PMK for the last 15 years and am presently > > also using Pyrocat HD. I scan both kinds of negatives either with > > EPSON 4990/Vue Scan or IMACON 646 and have beautiful results with both > > developers and both scanners. > > > > On and off I am poring over the following question which is directly > > pertinent to this list: > > > > Enlarging pyro negs (PMK and/or Pyrocat) on multigrade silver paper > > gives you the advantage of the yellow/brown stain selectively holding > > back the hard blue light of the enlarger so that the highlights be > > selectively filtered down by the stain and thus giving better > > differentiation in the highlights. This has been described in depth by > > Gordon Hutchings (inventor of PMK) and also by Sandy King (inventor > > of Pyrocat). > > > > Now what I would like to work out is how to achieve similiar increase > > of differentiation of highlights in scanned pyro negatives. This would > > have to entail scanning the pyro negs in colour and then simulating > > the selective filtering by intelligent use of the channel mixer or > > some such in Photoshop. > > > > Has anyone any ideas in this direction or does anyone know someone > > with such ideas? ;-) > > > > best regards > > Juraj >
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Re: Scanning Pyro Negs?
2006-03-29 by scott_now_coming
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