Easy-to-use contrast masking is perfect for improving the image in Type "R" prints or other reversal materials such as CIBACHROME, ILFOCOLOR or color slide duplication. MinitMask is light sensitive glass. When exposed by powerful electronic flash, it will hold a temporary image, suitable for photo masking. The mask image fades down and should be used immediately, or reflashed before reprinting, to rebuild the image. MinitMask reduces contrast, improves highlight detail, midtones and more open shadows. MinitMask can also be used for shadow masking in black & white. Suggested retail price was $249