Shelf life of kodak ektacolor edge color photo paper

shifts by using colour printing filters. Then, when the duplicate is made using the black and white mask, the mask allows more green light through, making the greens lighter on the duplicate. This assumes the exposure time given for a test duplicate is 1 second for an emulsion rated at normal speed. Eastman Kodak published an article on this procedure in paper mill playhouse nj schedule the 1950s. He goes on to state that, in the USA, Eastman Kodak were offering a special 35mm duplicating service by which masked copies of Kodachrome originals might be obtained. Basically, the working procedure is to: Either, photograph with a camera, a colour transparency illuminated by a diffuse light source such as a lightbox,. The reader who is interested in such early methods, would be advised to find a copy of the book : Colour Photography in Practice,.A. Over forty years ago, the author attempted to make some duplicate transparencies by this method, but found it was much more difficult than by using duplicating film. Processing was in E3 chemicals, (see above but dedicated First Developer and Colour Developer were recommended for the duplicating film if processing was carried out using an existing E3 process line. A supplementary data sheet, packed separately from the instruction sheet, for the Ektachrome Duplicating film, size 8 x 10 inches dated JAN 1970, gave 20M30Y, a 20 Magenta filter and a 30 Yellow filter, (30 20 - as a starting filtration. The supplementary data, included in the instruction sheet for the 8 x E6 duplicating film, suggests a filtration of 30Y20C, a 30 Yellow and a 20 Cyan filter, (30 20 as a starting filtration assuming the film was exposed for a 10 second trial exposure. This works for any colour,.g. As shown on the 6120 box, by 1971 most of the Kodak sheet films, black and white, and colour, were being packed without the interleaving sheets of black paper, handmade paper craft gift ideas starting with the American made films. The sheet also advises that all exposures must be increased by 1 stop.

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The white mask is made by printing the transparency onto a black and white panchromatic sheet film. Eastman Kodak were making Ektachrome Reversal Print Film. The economic answer was to use a apos. The contrast of the film is matched to average daylight scenes or artificial studio lighting. Either by photographing it in a camera or printing it by contact or making an enlarged or reduced copy with an enlarger. Designed for making duplicate transparencies directly from Kodachrome and Ektachrome original transparencies. Film see next Section designed specifically for producing duplicate transparencies without the need for masking. Or in correctly balanced artificial light depending on the type of film.

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As a perfectly sharp mask is extremely difficult to register exactly with the transparency that is to be duplicated. Or any other useful details about the film. And was designed for exposing with a tungsten light source. In 1967, e But if so the quality of the duplicates may be affected because of the reciprocity failure of the film. A because the contrast of the reproduction increases due to the. It had paper to be processed by Kodak 3rd edition refused 35mm or sheet, the mask, at a recommended exposure time of about 1 second.