SU250668A1 - METHOD OF MANUFACTURING AND DRAWING OF WIDE-SCREEN STEREOSCOPIC FILMS - Google Patents

Description

The invention relates to film technology. The well-known methods of production and reproduction of stereoscopic films are shot on a 70 mm film with a ratio of sides on a 1.37: 1 screen with the arrangement of stereo pair frames next to each other. Such arrangement of stereopair frames with such a ratio limits the creative possibilities of stereoscopic cinema, limits screen sizes. In addition, (Non-stereoscopic variants) Only standard formats can be obtained, which also reduces their artistic value and technical and economic indicators.

: According to the proposed method for 0: security (OPPORTUNITIES for obtaining stereo images on wide screens of various sizes while simplifying the film production process. Shooting is performed with image caching with a preference ratio of the stereo pair of 2.25: 1 to a 70 mm film with a frame pin, equal to an odd number of perforation steps, for example, five, and films are optically printed from the right and left images onto a 70 mm film with the same stereo pair with two anamorphic images p house with each other, 70 mm film - with a stereo pair pitch equal to twice the number of perforation steps with two non-amorphized images arranged one above the other, and 35 mm film with a stereo pair equal to the frame pitch with two non-amorphized (cached) images placed each other over friend.

In addition, according to the proposed method of obtaining non-stereoscopic movie versions of various formats due to the fact that 70 mm intermediate positive is printed from one of the images of the stereo pair of the original negative, from which materials for mass printing of films are produced.

FIG. 1 shows the arrangement of 70 mm film of two cached frames of a negative stereo pair with a ratio of 2.25: 1; in fig. 2 - arrangement of two anamorphic frames of a stereo pair, p, of a stereo film copy on a 70 mm film; on f; 3 - arrangement of two non-anne-morphed frames of a widescreen stereo pair on a 70 mm film with a stereo pair equal to ten steps of perforation; in fig. 4 - arrangement of two non-amorphous (cached) frames of a stereo pair of widescreen stereophiles on a 35 mm film with a stereo pair step equal to four perforation steps. 3 A stereo film was shot using conventional widescreen (70 mm} filming devices equipped with two-lens, solid optical: blocks containing spherical lenses and prisms for half-70-mm film of two rows of different images with the same side of each image 2 , 25: 1 and sizes 25,75x11,5. The current printing of working positives in the production process of the film production is carried out by contact method on a 70 mm film (on a 23ShTK-1 apparatus). Workers view the screen positives using a 70 mm film projector supplied with About a two-object camera that provides image brightness corresponding to modern standards on a screen with dimensions up to 7X3 liters. The technological process of film production (recording and rewriting sound, editing) is made using the equipment of a screen format cinema. As a result, a 70 mm stereo image is obtained. film and six-channel magnetic original dubbing on 35 mm film.25 In addition, with a wider implementation, and the production process of stereoscopic movies, shooting can be made on 70 mm film with a stereo pair step equal to three perforation steps (14.25 mm), which will save film savings in film production. Accordingly, it is necessary to alter the tape-recording mechanisms of the filming copy and projection equipment. From the obtained raw materials, production of the following types of films is made, reproduction, of the following types:; a) a radio scoop, r. Data ... stereoscopic hilmbocopy with an anamorphic image of 70 mm film. At the same time, the right and left images are successively printed in an optical-40 by way into two negative runs: ° film. , ;; - b) format stereoscopic format copies of a sealed image on. 70 mm film with pitch stereojiaplbi,; equal to ten steps of perforations - (47.5; LJ), when the time is out (M.telling of the right and left frames of a stereo pair over each other. These film copies are intended for demonstration-.50s in special large-format cinemas. To print such film copies from; n -vik-avtvv film-copier is necessary; optical printing with 70 mm of the original stereo-negativa. on a 70 mm film with a step of stitching 47.5 mm (10 perforations). In this apparatus, the movement must be provided for the head of the negative in cross-section; printing, printing the right and left images also pr 4Giva-47.5 mm and a special optical device for creating the necessary removal base. IB) widescreen stereoscopic films with a cached image on 35 mm film with the placement of the right and left frames stereo pairs over each other. These film prints are intended for demonstration in widescreen movie theaters equipped with conventional 35 mm film projectors (ic optical nozzles) and aluminized screens using the polaroid method. The printing of such films produced from the negative and, if necessary, through the counterviving. d) widescreen and standard format nonaroscopic film prints (flat versions). Since such films require a large number, it is advisable to receive them through kontratipirovanna using 70 mm intermediate positive. From the received 70 mm of intermediate positive print the necessary amount of 35 mm widescreen counter-strips with anamorphic image and 35 mm counter-fingers of the usual format. Recent morut be used also for mass printing of 16 mm film prints. e) Large-format non-stereoscopic film prints ("flat version") for demonstration in large wide-screen theaters. Such film prints can be obtained in the same manner as 70 mm prom. Interim positive in the previous case. Subject of the Invention 1. A method of producing and reproducing widescreen stereoscopic movies with anamorphic and cached images and widescreen stereo films by shooting on a widescreen, for example, 70 mm film with two different stereopair frames, so that it is possible to obtain a stereo image with wide screens of various sizes with a single-V belt simplification of the film production process, filming is done with image cachet The ratio of the sides of the stereopair is 2.25: 1 per 70 mm film with a frame pitch equal to an odd number of perforations, for example, five, and film copies are printed optically from the right and left images on a 70 mm film with the same stereo pair steps when two anamorphic images are located side by side, on a 70 mm film — with a stereo pair step, to an early doubled number of perforation steps when two non-amorphous images are placed above each other2. A method according to claim 1, characterized in that, in order to obtain non-stereoscopic versions of films of various formats, 70 mm intermediate positive is printed from one of the images of the stereo of the original negative, from which the mass-printing materials MOVE 10.

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