Hi list members I have a container with EDTA in it however I don’t know if it’s di sodium or tetra sodium. Any test that I can do to establish which type it is? Thanks John John Brewer www.johnbrewerp

Hi all, A few months ago Simone Simoncini and I got in contact and we started to exchange our findings and research for alternative, say less toxic, photo initiators. In the years before Simone experi

Dear Alt List, Three years ago I co-authored Digital Negatives with QuadToneRIP with Ron Reeder as some may know. I really loved getting into the weeds of writing ink descriptor files and such. I also

Hi every one, I just thought I would mention that I was in touch with Frédéric Gironde at Ruscombe Paper Mill about their Herschel paper I had ordered which had some issues with argyrotype printing no

Hi list friends. I was wondering if anyone has a reccomended source or knowledge of where I might buy some (bulk these days) rubylith? I’m looking for a couple meters. (I know a hoards worth) Uk/Europ

All I have encountered an issue with cyanotype on HPR paper. Just opened new package and two sheets show same issue of what I would call mottling or specking. Nothing changed in my workflow and as a m

Hi all What A4 pigment printers are out there? I'm in the UK if that makes a difference. Doesn't need to be an Epson. Most negs I make are gum but I do occasionally print Na2, cyano, and brown prints.

What-if there was a Process available where you could make a CMYK four color image: One exposure. One digitally made negative One development In Pigment Does not require a screen Do not compare this t

Can anyone suggest a more up-to-date but same-level text of Kosar's "Light-Sensitive Systems" (1965)? Alberto

I'm looking at the Bostick & Sullivan site (and other similar suppliers) the list includes the following: Traditional Platinum #3 (Potassium Tetrachloroplatinate 20% solution) Cesium Palladium Solutio

Anyone doing research into alternatives for Dichromate when working with pigment based alternative processes. I am aware of diazo compounds but have not found any mention of BAPO, TPO, or LAP photo-in

Hello All, I've occasionally made van dyke prints over the past 20 years with much success, but it is not one of the main processes. It's in my tool box mainly because it was taught to me in undergrad

Hi all, I'm making trichrome prints using cyanotype, van dyke and gum bichromate, in that order. I just made my second exposure/layer using the van dyke process and all was looking great until I used

Hello all! My name is Bradley; I'm new to this listserv and am very excited to exchange knowledge with everyone <3. I've been doing a lot of Gum Bichromate work, typically mixing dry pigments with gum

> But with CHIBA process to avoid using the dichromate which apparently works well with casein. Casein being a protein works not only, the chiba way, with ferric ammonium citrate but also amazingly we

Nice news! https://www.hahnemuehle.com/en/about-us/sustainability/environment-manifesto.html

Dear List, Wow, it’s already been four years since I wrote an article on papers for palladium printing (NA2 variety) here: https://rfotofolio.org/2019/04/11/papers-for-palladium-printing/?fbclid=IwAR2

This is probably a question for chemists on the list. I had some powdered ferric oxalate a year or two ago that I mixed up and it always stayed milky/never went into solution. I thought at the time, O

Hey listees, My students have built pinhole cameras, but we want to take it up a notch and add a lens. Can anyone suggest an easy entry into this? An inexpensive lens and simple construction? Much app

Hello all, I think that this exhibition opportunity might be of interest to folks here... Call for Entries: The Art of Handmade Photography: A Juried Exhibition at the Vermont Center for Photography i