How to eliminate the precipitate from Van Dyke Brown solutions

How to eliminate the precipitate from Van Dyke Brown solutions

The addition of tartaric acid in VDB solutions reduce the quantity of precipitate.
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Van Dyke Brown

Preparation of classical VDB solution and modified (without precipitate) VDB solution.
4 Comments
Dupont 4-R, Eder's harmonizing reducer

Dupont 4-R, Eder’s harmonizing reducer

Dupont 4-R intensify shadows and reduce high densities to correct exceptionally contrasted analogical negatives.
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Basicity and color of cyanotype

Basicity and color of cyanotype

Influence of basicity on the color of Cyanotype: the results using cheap and slightly basic paper are visually superior.
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Tea toned posterized cynotype

Tea toned posterized cynotype

A special tea toned posterized cyanotype print.
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K-channel or grey scale in pigmented Van Dyke Brown prints

K-channel or grey scale in pigmented Van Dyke Brown prints

Comparison of the use of K channel or a grayscale image in VDB pigment print.
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Paper for cyanotype: the winner is Bristol 350g

Paper for cyanotype: the winner is Bristol 350g

Bristol 350g: low-cost, deep shadows, high weight, fine detail for cyanotype.
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