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The front film is orthochromatic, to record the blue-green portion of the picture. On the surface of its emulsion is a red-dye layer equivalent to a Wratten 23A filter. The rear film is panchromatic, and being photographed through the red coating of the front film, records only the red-orange components of the picture. No filtering is necessary ...
The strips can then be rearranged and laid out sequentially to represent the order one wants to film in, providing a schedule that can be used to plan the production. [1] This is done because most films are shot "out of sequence," meaning that they do not necessarily begin with the first scene and end with the last. [ 2 ]
AD strips are dye-coated paper strips that can detect and measure the severity of vinegar syndrome in film collections. The strips change color, shifting from a blue to green to level, based on the level of acidity found. If the AD strip level remains at blue, the film is in good condition and no deterioration is present.
The use of dye imbibition for making full-color prints from a set of black-and-white photographs taken through different color filters was first proposed and patented by Charles Cros in 1880. [1] It was commercialized by Edward Sanger-Shepherd, who in 1900 was marketing kits for making color prints on paper and slides for projection. [1]
In his feature film The Aviator (2005), Martin Scorsese seamlessly blended colorized stock footage of the Hell's Angels movie premiere with footage of the premiere's reenactment. The colorization by Legend Films was designed to look like normal three-strip film but was then color corrected to match the two-strip look of the premiere's reenactment.
As a bipack color process, the photographer loaded a standard camera with two film stocks: an orthochromatic strip dyed orange-red and a panchromatic strip behind it. The orthochromatic film stock recorded only blue and green, and its orange-red dye (analogous to a Wratten 23-A filter) filtered out everything but orange and red light to the panchromatic film stock.
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The process of stripping for general commercial offset printing has largely been eliminated through the use of digital prepress technology, in which imposition software is used to "digitally strip" the pages together. Some printing technologies continue to use stripped film, especially in silk-screen printing, although this is likely to change ...