Strobochromatogram
Strobochromatogram ( ancient Greek στρόβιλος strobilos "vortex", Greek , χρῶμα chroma "color" and γράφειν graphein "write", in German color writing) is the name of the technique in analog photography that uses color filters for analog color separation .
Basics
Every stationary, constantly illuminated / transilluminated object can be photographed on color reversal or color negative material ( positive film or negative film ) through three (or more: 6, 9, 12 etc.) exposures using the three separation filters ( additive primary colors ) blue, red and green, also color-neutral can be imaged as in a normal exposure process without a filter. In the strobochromatogram, the stationary and constantly illuminated / transilluminated objects differ from the moving and / or differently illuminated / transilluminated objects. The speed of the movement, the lighting or transillumination, the number of exposures and the time between exposures determine the degree of movement representation in the images. The stationary and constantly illuminated / transilluminated objects become color-neutral, the moving and / or differently illuminated / transilluminated objects appear in the filter color (s) for achromatic objects or in the mixtures of their own color (s) and the respective filter color (n). With the object and light movements that take place through the filters between the individual recordings, the colors can shift significantly or even very finely (depending on the strength of the movement).
The first strobochromatogram (by Hans Andree ) was shown in the camera in 1975 .