Van Dyke Brown Print
1889, W. J. Nicol's Kallitype patent

Prompt
Apply the Van Dyke Brown Print effect using rich chocolate shadows, warm sepia midtones, and creamy paper highlights. Embed the image in visible cotton fibers with a matte surface, delicate tonal transitions, subtle exposure unevenness, and softly feathered sensitizer marks at the margins. Keep the original subject and composition.
Identify
You see a photograph with rich, deep brown tones and a matte finish. The image looks embedded directly in the paper fibers.
Principle
Ultraviolet light reduces light-sensitive ferric iron1 into ferrous iron. This new iron compound then reduces silver nitrate2 into solid metallic silver.
Example
W. J. Nicol: Early Kallitype and Vandyke brown tests, 1889.
Try it out
Examine the shadow areas of a historical brown print under a magnifying glass to see exposed paper fibers.
Background
Invented by W. J. Nicol in 1889, this technique is named after the Flemish painter Anthony van Dyck. The resulting rich, deep brown tones closely resembled the painter's favorite oil color. A photographer coats paper with ferric ammonium citrate, tartaric acid, and silver nitrate. After drying, a negative is placed directly on the paper. They expose this contact sandwich to bright sunlight or ultraviolet light. The light causes the iron salts to chemically react. This reaction converts the silver nitrate into visible metallic silver. Finally, the print is washed in water and fixed with sodium thiosulfate3. This makes the deep brown image permanent.
Distinction
Unlike glossy albumen prints that use an egg-white binder, Vandyke prints lack a surface emulsion layer. Their matte image rests directly inside the paper fibers.
Aftermath
It proved that combining iron and silver chemistry could produce beautiful, accessible photographs without complex darkroom development.
Further examples · 7 images






Question
Why is the photographic technique named after a famous painter?
Show possible answer +Hide answer −
The final print produces distinct, deep brown tones. These closely mimic the dark brown oil paint heavily favored by 17th-century artist Anthony van Dyck.