Van: http://www.loc.gov/exhibits/empire/making.html

A single, narrow glass plate about 3 inches wide by 9 inches long was placed vertically into the camera by Prokudin-Gorskii . He then photographed the same scene three times in a fairly rapid sequence using a red filter, a green filter and a blue filter.

De afbeeldingen waren bedoeld als dia, waarbij de projector de drie afbeeldingen weer combineerde tot 1 geheel.