Roman Meyer photography
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Platin and palladium print<br />
Platin and palladium print<br />
Titel: La Habana | Format: 40 x 40 cm | Technic: Gum over platin | Material: Aquarelle paper<br />
This is a monochrome photographic printing process, based on the light-sensitivity of ferric<br />
oxalate. The ferrous oxalate reacts with platinum or palladium reducing it to basic platinum,<br />
which builds up the image.<br />
When the process was invented it was relatively cheap, but it quickly became more costly. At<br />
present a gramm of platinum cost around $ 40. The light sensitive chemicals are mixed from<br />
powdered basic chemicals, then hand applied with a brush. Because of the non-uniformity of<br />
the coating and mixing phases of the process, no two prints are exactly the same.
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