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COLOUR CINEMATOGRAPHY
THE PRESENT AND THE FUTURE OF THE VARIOUS PROCESSES WITH SPECIAL REFERENCE TO THOSE IN WHICH CHEMICAL PRINCIPLES ARE APPLIED
General Topics.
Cinematography may be said to be the eldest daughter of photography. Apart from the scenic part, form and working of the camera, all the rest does not differ in the least from the technique of photography. It may therefore be stated that the progress of cinematography is intimately connected with the progress of photography. Thus, with regard to the preparation of photographic emulsions, special mention should be made of the great progress achieved in the increase of general and chromatic sensitiveness : it has already had a very great importance, which may increase in future, in the taking of motion pictures in any place and under any light conditions.
The technique in the toning process of the image by the replacement of reduced silver by other coloured compounds or by lake colour has had a great influence in increasing the suggestiveness of motion pictures, and has succeeded in obtaining, up to a certain point and in certain particular cases, by means of a proper blending of the toning and colouring of the film, something resembling to the natural effect of colours.
Nor can the progress made in the optical field be overlooked, especially as regards the luminosity of the lens, by which cinematography will profit more than photography, because a great luminosity necessarily implies a very much reduced focal depth, which can only be tolerated by cameras fitted with lenses with a short focus, suitable for small size pictures, as in the case of negative cinema films.
Thus, the very recent Meyer F 1,5 lens is described as a lens merely for cinematographic cameras.
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