DE2007240A1 - Extreme photographic tone separation with co - Google Patents

Abstract

Extreme tone separation and conversion of the extreme tone values into different colours is effected by copying a black/white or colour positive or negative, using different exposure times, onto contrasting black/white material, re-copying these first copies onto contrasting material, then combining a suitable first and second copy and making a series of exposures with white or coloured light through this combination onto colour material.

Description

process for obtaining artistically valuable color control images, colored slides and colored cinema films using a modified one gouache color effect.

the modified color gouache effect is an ins extreme driven and applied to color photosensitive photographic materials Sound resolution that is modified in such a way that the usual sound separation is used grayscale levels can be reproduced in different colors.

although sound separation has been known for a long time process, this was used to achieve different color values in the here described form has never been used. the gouache effect to achieve different gray values of black and white originals are used, for example, in the book by dr. o. croy, "enlarge nit all finesse", string 103, hering-verlag, seebruck am chiemsse, 1953, described.

starting original for the creation of artistically valuable pictures According to the modified color gouache effect, photographic black and white halftone negatives are black and white halftone positives, photographic color negatives or color slides or analog variants of a movie.

of the black and white halftone negative or positive are in in a first step several copies, which we refer to as (k 1) here hard-working, light-sensitive black and white photographic film material produced (lith films). the copies produced (k 1) differ only in the different exposure, which leads to larger or smaller areas appear covered in black.

the copy (k 1) that was least exposed shows only in the the most transparent places of the starting halftone original a cover. the copy (k 1), which experienced the greatest exposure, is only transparent where the starting halftone original is shows its highest blackness. it has proven to be cheap, minimal 2 and maxical 6 copies to be made.

of the copies (k 1) thus created are again u. copies (k 2) manufactured on hard-working, photosensitive, photographic materials, that the transparent places from (k 1) are now heavily blackened on (k 2), or the heavily blackened areas of the image from (k 1) are converted into transparent ones on (k 2) will.

of color-negative and -slides can be, as stated above, make copies (k 1). but it is also possible to make copies (k 1) on pamchronatic, hardworking, photosensitive, photographic material.

it is then possible through the use of colored copy light brightness-toning levels in each spectral absorption range of the colored originals to obtain. Copies (k 1) can also be used as color separations on hard-working, manufacture photosensitive, photographic material. so here are the layer dyes of the original color image it is the image-controlling element and no longer the density tonal values.

the copies made from color materials (k 1) are now copied over, so that the transparent images ((k 1) films) in the copy produced (k 2) are blackened appear and the blackened images of the copy (k 1) in the copy (k 2) are transparent appear.

under copy (-ren) the same size should be shown (e.g. contact or optical copy) as well as the resized copy (enlarge or reduce) understood.

using the copies obtained by the above procedure (k 1) and one or more black and white or color originals are suitable films superimposed, in such a way that the registration marks of the original images are superimposed lie.

through the combination, colored or white light can now be sensitive to the light, photographic color reversal or color paper, color reversal or color negative flat or roll film or color reversal or color copier cinema film material can be exposed.

example: from a black and white halftone negative to hard-working, light-sensitive, photographic material, preferably on so-called lith films, For example, 3 copies (k 1) are made so that the least exposed copy (k 1) the most transparent negative image areas are blackened, the densest negative image areas but appear completely transparent. on the exposed copy (k 1) the densest parts of the original negative are reproduced transparently, u while all lower densities of the original negative on the copy (k 1) hche to show up.

let's call the least exposed copy (k 1) now (k 1/1), the next following (k 1/2) and the most exposed copy (k 1/3). of these 3 copies are, for example, contact copies (k 2) on hard-working, light-sensitive, photographic black and white material produced.

an thus receives: of (k 1/1) a copy (k 2/1) of (k 1/2) "" (k 2/2) of (k 1/3) "" (k 2/3) are now assembled together, for example: (k 1/1) and (k 2/2), (k 1/2) and (k 2/3) + (k 1/3) without another copy (k 2). of the two rontages (k 1/1) plus (k 2/2) and (k 1/2) plus (k 2/3) and the copy (k 1/3) are now for example one after the other on a light-sensitive, photographic color reversal material 3 different ones exposures performed. the color reversal material exposed in this way is now manufacturer information developed and processed.

Claims (4)

patent claim: procedure for obtaining artistically valuable surveillance images, colored slides and colored cinema films using a modified one color gouache effects; characterized in that from photographic black / white halftone negatives and halftone positive, from color negatives and color slides as well as from cinema film color positives and cinema film color negatives through differently dimensioned white or color exposure on hardworking, photosensitive, photographic black and white material copies (k 1) can be made of which in dimension copies of the same size (k 2) on hard-working, light-sensitive, photographic black / white material can be drawn and made through suitable combinations of copies (k 1) and copies (k 2) light-sensitive color materials with colored or white light are exposed several times, whereupon the color materials according to the film manufacturer's specifications developed and processed. Subclaims: 1. Method according to claim, characterized in that that the copies (k 1) and (k 2) mentioned in the patent claim one or more times (k 3), (k 4) etc. can be copied. 2. The method according to claim and dependent claim I, characterized in that that din in the patent claim and sub-claim 1 named copies in the size can be changed. 3. method according to claim and dependent claims 1 and 2, thereby characterized in that in the patent claim and in the subclaims 1 and 2 mentioned Copies (k 1) and (-k 2), sensibly combined together, first on black and white material (k 5) can be copied. 4. method according to pãtentansprucil and subclaims 1, 2 and 3, thereby marked that the named copies are for color and copy to be copied and / or tone-true original image areas are masked 5. method according to patent claim and subclaims 1, 2, 3 and 4, characterized in that the patent claim called (-n) white (-n) or colored (-n) exposure (s) with the help of copied Fonts or templates are made or are made