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COLOR RENDITION 271
The Eastman Type Two Panchromatic emulsion showed itself particularly satisfactory in the rendition of the blues, as with it almost every shade of blue was rendered accurately and pleasingly. This particularly adapts this film for use when making night-effect scenes by daylight, with the A or F niters. It is also well to notice the vast difference caused by the use of the ordinary yellow niters with this film. The illustration shows this very clearly, Chart F being the one which comprises the blues, and the illustrations showing how it photographed with and without the use of a K 1 filter.
The DuPont Panchromatic emulsion proved itself particularly superior in its red-sensitivity, being, if anything, somewhat more sensitive to this region of the spectrum than any other film tested. This characteristic makes it particularly desirable when photographing people with a high coloring, when they use little or no makeup. This characteristic also adapts it to fire-scenes, and to night-shots where artificial illumination — particularly incandescent — is used. The illustrations show the results of photographing color-chart C, which embraces the lighter reds, with this film. Notice the vast difference between the tests made with and without filters. It is worthy of mention at this time that the general color sensitivity of this film was very satisfactory and its speed ratio was highly pleasing. This film showed slightly softer results in the darker colors.
The Agfa Panchromatic proved itself particularly sensitive to the yellows and oranges, which makes it especially suitable for photographing sunrise and sunset effects, and gives it excellent characteristics for general use with incandescent lighting. The high yellow sensitivity also makes the use of the K series of filters particularly beneficial, as the illustrations show. Although in most cases this film showed much more contrast than either the Eastman or Du Pont, its speed was also slightly slower, which is desirable for certain effects.
In all the tests of the Agfa Super-Speed (which of course is an Orthochromatic emulsion) many interesting results were noted and it is well to mention that while this film lacks the color sensitivity shown in the Panchromatic emulsions, it is very desirable on account of its high speed and can be used especially when light conditions are very poor. In a series of tests made in very subdued light, this film showed most favorable results although its color rendition could not be as satisfactory as that of Panchromatic film. In illustration number 3 you will notice the results of this film upon a yellow color sheet.
These few remarks are all which the space allows to be made about the definite results of these tests. In closing, however, the writer wants to reiterate that these tests were made, not only as a means of securing practical information which he found vital to his personal work, but as a means of obtaining and codifying a vast mass of data of which his experience showed him the Cinematographic Profession as a whole stood in urgent need.