Ferric oxalate (FO) is the engine of platinum/palladium printing. When it’s healthy, prints “pop” with clean highlights, deep blacks, and smooth midtones. When it drifts—even a little—you burn paper chasing exposure, contrast, and clearing.
Category Archives: Platinum/Palladium Printing
Platinum/Palladium Developers Compared: Potassium Oxalate vs Ammonium Citrate
Swapping developers in platinum/palladium can change the print’s voice—even at the same exposure. Here’s a practical overview of how potassium oxalate (POx) and ammonium citrate (AmCit) differ in tone, contrast, and Dmax when everything else stays constant, plus when to reach for each one.
The Missing Lever in Pt/Pd Printing: Dialing Potassium Oxalate Concentration for Tone, Contrast, and Feel
Premium Member Article This deep-dive is part of Darkroom Diary Premium—my members-only library for photographers who want repeatable nuance, not happy accidents. Inside Premium, I go beyond “recipes” to show why choices work: tested variables, controlled comparisons, and the decision frameworks I use to shape tone, contrast, and feel in the final print. What members can expect IfContinue reading “The Missing Lever in Pt/Pd Printing: Dialing Potassium Oxalate Concentration for Tone, Contrast, and Feel”
How I Make Large Format Platinum/Palladium Prints from In-Camera Silver Gelatin Paper Negatives
In this new video, I take you behind the scenes in my darkroom to share the meticulous process of creating large format platinum/palladium prints from in-camera silver gelatin paper negatives. From the unique characteristics of paper negatives to the intricate steps of crafting these exquisite prints, I walk you through my workflow, offering a detailed look at the artistry and technical skill involved. Whether you’re a photography enthusiast or simply curious about the world of fine art printing, this video provides an in-depth glimpse into the magic of transforming a handmade negative into a timeless piece of art.
Exploring Potassium Oxalate Developer: A Comprehensive Look at Its Use in Platinum and Palladium Printing
Potassium oxalate has long been a favored developer for platinum and palladium printing due to the unique aesthetic qualities it imparts to prints. Its ability to produce warm, rich tones and enhance subtle details makes it a go-to choice for many fine art photographers and printmakers.
However, as with many photographic chemicals, potassium oxalate has safety considerations that cannot be overlooked. This article explores potassium oxalate, including its benefits, potential risks, and best practices for safe handling.