SU99898A1 - Combined color filming method - Google Patents

Description

Known methods of combined filming, according to the method of the wandering mask, which were taken during the filming of the first exposure simultaneously on two negative film and mask films. When this is done, on a negative film, taken from the background radiation, a hidden image of the actor’s scene is obtained, and on the mask film, which is sensitive to the background radiation and protected from the rays reflected by the actor’s scene, the appearance of the actor’s scene, which then used as a mask during the second exposure. For the separation of images of the actor and background, the separation of light in the visible part of the spectrum is usually used, which cannot be used for color combinational surveys.

There is also known a method of separating images of the actor and the background in color “camera shooting, based on the use of the infrared part of the spectrum.

The highest quality of the combined frames using these methods is achieved when the camera first exposes a light optic splitter optical system, although in some cases (especially when black-and-white photography), practically acceptable results can be obtained even when the first exposure is made by a conventional Camera transmitting Two paragraphs shit-in movie channel.

G1red., The one-way method of combined color filming using the stray mask method, in contrast to the known methods, involves using the ultraviolet part of the spectrum for image separation.

At the first exposure of an actor (or another subject), they are placed in front of a white background and refreshed with white light from sources in front of which light filters are installed, delaying ultraviolet radiation. Before the sources of light that illuminate. background, install light filters that allow only ultraviolet radiation.

Shooting is performed by a camera, in the optical system of which the light beam is split into two beams, giving identical images on two films. Two films pass through the chamber; color is negative and masked. At the same time, the color negative film is protected by a light filter that delays ultraviolet rays and cuts off all visible rays, and a mask filter - by a light filter that transmits only ultraviolet rays, but delays the entire visible part of the spectrum.

Thus, at the first exposure to a color negative film, a latent color image of the actor is taken and the unexposed

background, and (on the mask - unedited silhouette of the actor on a glare background. After the first exposure, the mask film is developed, reversed and enhanced. The resulting mask is then used and the second exposure on the not yet bright colored negative film.

It is proposed to modify this method in the same way, “to get macs” due to the brightness interval between the actor and the background, which, during the first exposure, protects the field around the image of the actor on the color negative using an analyzer that does not transmit polarized light from the background.

To do this at the first EXPOSURE

the actor is illuminated with visible unpolarized light, and the background with a brighter, polarized light either at reflection or at light. In any case, backgrounds made of non-depolarizing materials are used. The shooting, as in the previous version, is performed by a camera with a splitting optical system.

Subject invention

1. The method of combined color. Noy filming on the method of a wandering mask by shooting at the first

the exposure of the camera with a split optical system to two films - color negative and mask, sensitive to background radiation, through light filters protecting the color negative film from the reflected rays from the background rays, and the mask film from visible light, and using advanced and a reversed mask film as a mask during the second exposure, characterized in that, for separating images of the actor and foul in the first E: Exposure, a white screen illuminated with ultraviolet rays is used, and Acoustic film that is sensitive to ultraviolet rays, and in front of the light sources that illuminate the actor, they place light filters that do not transmit ultraviolet rays.

2. Modification of the method of claim 1, characterized in that during the first exposure the actor is illuminated with visible light, the screen is brightly polarized, and a polarization filter is installed in front of the negative color film to shade the rays coming from the screen in order to obtain a mask due to p “the rest of the interval between the actor and the background.