Sensitivity Of Film Has Been: This factor depends on the filter, the color sensitivity of film has been of the fil and also the type of illumination; that is, daylight or tungsten, f example, the Filter factor of the G Filter for Kodak Super-XX Pa chromatic Roll Films and Film Packs in daylight is only 2*^. F Kodak Verichrome Film it is 5.
Below is given a Table of daylight Filter factors of the commor used filters with the different black-and-white Kodak Films.
Speedlights flash, the picture is taken, the film automatically advances, the shutter is cocked, and all is in readiness for the next child in the line. Similar cameras are available which operate with 35mm film. The smaller film cuts costs a bit but naturally the contact prints are not so appealing as those from the larger film.
The eye has its greatest sensitivity of film has been in the green, is less sensitive to blue and violet, and is not at all sensitive to ultraviolet. This accounts for the fact that an average landscape photographs differently, with respect to tone values, than the eye sees it. In the average photograph of a landscape, the trees appear abnormally dark and the sky abnormally light. This is because light from the sky is especially rich in blue, violet, and ultraviolet, to all of which the film is particularly sensitive, and to which the eye is comparatively insensitive. On the other hand, trees reflect much green light, to which the eye is very sensitive and to which the film is much less sensitive.
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Photography
