ly encapsulate the grain layer (in essence, forming an envelope of amber around the grain).After drying, the panchromatic B&W emulsion was then coated on the composite plate and the final plate was soon ready for market.The plate was exposed in a glass plate type view camera by placing it in the holder with the coated side away from the lens, so that when exposed, the light traversed the glass, through the grain and exposed the light/color sensitive emulsion from the back. After exposure, the plate was processed to reversal in an acid dichromate type process.The final photograph has a beautiful look with wide tonal gradation and if you could see an original well preserved Autochrome today, you would be amazed at the extrodinary way they age, and can in fact appear as though they were processed only yesterday. The image below is an original Autochrome, photographer unknown.This filter is the only one of it's type in the world. Used for introducing the appearance of enlarged grain in color photographic prints. The appearance of grain created is a true representation of the color inherent in the original.Unlike texture screens that work by breaking up the image using a patterned blocking mask such as Kodalith film (tm Kodak), this process works by projecting a "normal" photographic color negative thru a handmade "additive color synthesis" stochastic screen comprised of millions of grains of transparent potato starch. The starch is dyed to two specific wavelengths then mixed to uniformity and coated on a glass plate.Printing is achieved by utilizing a custom glass carrier for enlarged grain imaging or projected thru a coated glass plate that is in contact with a receptor paper. From subtle to radical effects are possible, while maintaining the contrast of the original and the ability to control color. To learn how this process was invented and how we make it, go here.The Grainmaker color filter system was designed to introduce the appearan...
