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.
Dupont 4-R, Eder’s harmonizing reducer
Dupont 4-R intensify shadows and reduce high densities to correct exceptionally contrasted analogical negatives.
Basicity and color of cyanotype
Influence of basicity on the color of Cyanotype: the results using cheap and slightly basic paper are visually superior.
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.
Paper for cyanotype: the winner is Bristol 350g
Bristol 350g: low-cost, deep shadows, high weight, fine detail for cyanotype.
