Calibration · UV Exposure
Master UV exposure for your prints.
UV-sensitive processes (cyanotype, Aquaprint, Van Dyke, Carbon) depend on light source, distance and exposure time. Calibration Flow quantifies these variables.
Why UV calibration is critical.
A 30-second exposure variation or a 5 cm distance change radically alters the result. Highlight density and tonal separation depend directly on the UV source.
Calibration Flow measures the actual density of each patch and compensates for deviations, regardless of your source: sunlight, UV tubes, UV LEDs or Luminograph.
UV processes
Processes compatible with UV calibration.
Cyanotype
Sensitive to UV-A (365 nm). The most popular alternative process — process-specific curve available in the app.
Aquaprint
Gum printing reformulated by Vision Picturale. UV exposure controls layer hardness and final rendering.
Van Dyke
Iron-silver process, highly UV-sensitive. Calibration compensates for the characteristic non-linearity in mid-tones.
Carbon
Carbon transfer with pigmented gelatin. UV exposure determines the thickness of the hardened layer — calibration is essential.
Recommended UV source
Luminograph — calibrated UV exposer.
The Vision Picturale Luminograph is a UV LED exposure unit designed for alternative processes. Uniform, reproducible, Calibration Flow compatible.
Discover the Luminograph →Frequently asked questions
UV Calibration — FAQ.
Calibrate your UV exposure.
Quantify your process’s UV response and get a correction curve in minutes.
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