About the LC2 Ultraviolet Sensor

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When I designed my Light Counter LC2 system, I wanted to use the best possible sensor for platinum/palladium printing. Achieving this turned out to be quite difficult. Here's why.

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Announcing my new Light Counter LC2 System

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For much of the past year I have been developing a light integrator system for platinum printing and other historic processes. Initially this was a darkroom project for my own…

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How Much Platinum Does ‘NA2’ Leave in a Palladium Print?

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‘NA2’ is the shorthand name for a contrast control agent (restrainer) that’s often used with palladium prints. Its proper name is sodium hexachloroplatinate (Na2PtCl6). As you can see from its chemical formula, it contains platinum. This leads to a reasonable and fairly common question:

“How much platinum does ‘NA2’ leave in a palladium print?”

My short answer is: somewhere between almost none and none whatsoever. read on for the long answer…

(more…)

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What’s in a Name: Platinum or Palladium Print?

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There is a never-ending debate in the small world of platinum/palladium printing: what is the correct name for the prints we make? Are they platinum prints, palladium prints or platinum/palladium…

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Why Oxalic Acid Combats Black Spots

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Over the last few days I've been reading, writing and thinking about black spots. There's also been a big discussion about this on Facebook in the Platinum Palladium Printing group.…

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Black Spots

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Mysterious black spots have plagued platinum printers from the early days of the medium. They tend to appear as small, dense spots surrounded by a corona or a sometimes comet-like…

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New eBook: Manufacturing Ferric Oxalate

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I have just published a short ebook on manufacturing ferric oxalate for platinum/palladium printing. It’s available here: https://ianleake.com/product/manufacturing-ferric-oxalate/ Most platinum/palladium printers buy ferric oxalate from a commercial supplier. And this…

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Workshop Report

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I’ve just finished an enjoyable couple of days teaching Javier Ternero how to make platinum/palladium prints. Javier brought some negatives originally intended for albumen printing. Albumen needs negatives about the…

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Image Sharpness

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A common question from photographers is, "How to get the maximum possible sharpness in a print?" When seeking sharpness in a platinum/palladium print, there are several factors to consider: The sharpness…

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