Shadow detail is usually more of an exposure issue than a developer issue (not that either is irrelevant). I'm not a 510-pyro user, but if I were having shadow problems with any developer, I'd test with the same film rated at a lower speed before giving up on the developer.
I've used 510 Pyro, although not extensively. When Jay was online, we swapped some information, and I usually tested lower ISO than he did - thus, I needed more exposure to get shadow detail that I was satisfied with.
I have an opinion that could be right or wrong. Looking at Jay's prints on his site, he took portraits in which he seems to be interested in the higher values (skin tones.) He seems to let the shadows in the background fall away. I think for this reason, he didn't value the shadow detail as much as I did, and thus was able to use shorter exposures.
When I use more exposure, I've been happy with the shadow detail. I've used mainly Efke PL100 and Forte 400 with this developer.
I used Fred Pickers film speed test and shoot 120 tri-x 400 at it's rated speed. I actually had more of a problem getting the development time down (long enough for good contrast)for my color head.
Shadows have been fine.
My main reason for enquiring about the shadows was to see if other folks had experienced similar problems to those detailed by Craig, where his shadows were so dead and empty and his (ED) curve showed a long, flat toe.
Because I have never made up my own dev. before, I didn't want to go to the trouble of buying the chemicals, mixing it up and using 510-Pyro if it had inherent flaws.
So, where can one find the recipe? Google search showed nada.
The first post in this thread reads like the recipe is their, but the author forgot to include it.
here. The method/instructions for mixing and using those ingredients are probably so intuitive that Jay left them off from that page.
BTW, despite Jay's personal tragedy preventing him from practicing photography again, he appears to have been very active on photo.net for the past 5 months.
Thank you Peter.
I am new to the Recipe section of APUG. There is alot here to be learned.
I am currently focusing my efforts on in-camera B&W emulsion making. And the right developer for the emulsion is critical. So I will become a reguler here.
I do not know who Jay is, but my heart is with him.
I guess I didn't realize the format of the articles section had changed. The formula used to be in a little box to the side
Ascorbic acid 5g
TEA to make 100ml