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be caused where special filters and particular lenses have to be used are avoided. The process is free from fringing, parallax, and diffused focus, the overall thickness of the three emulsion layers being only about that of a normal one-layer film. One may note in particular that the light intensity required for projection is the same as for black and white film.
Furthermore, the grainless character of the image is worthwhile mentioning: there is no silver in the finished film, and the dye image is practically grain'ess and does not show any clumping. The image has a soft and quiet appearance and can be enlarged to a larger picture size than a black and white monochrome print. The light sensitivity of the material at present is less than that of fast black and white negative film, although it is sufficiently high for all practical purposes.
In sunshine 16 mm. motion pictures may be made using a lens opening of F:4.5 to F:5.6. For still-pictures, sufficient exposure will be obtained with I /50th to I / 1 00th of a second at F:3 .5. Colored advertising signs can be photographed at night if exposed with a full opening. The speed of this film, therefore, is clearly ample under all normal light conditions.
It is a natural question whether this process can be applied for professional motion pictures photographed in the studio and also for making paper prints in natural colors. Basically speaking, there is apparently no reason why this should not be possible, and work in this direction is already in full progress.
The problem of perfecting this method to deliver commercially acceptable results, naturally, requires additional time and research, but the results thus far achieved justify full hope that the final solution of all practical questions unsolved will be mastered within a reasonable time.
The reader has , no doubt , noticed that this issue of Agfa Motion Picture Topics combines the publication for June and July. This was necessary due to delay in securing color plates illustrating the description , which is contained in this issue, of the new Agfacolor Process.
We believe, however, that information pertaining to this new process was sufficiently interesting to justify the combining of these two issues into one so that the article might be graphically presented and easily understood.
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