New Filters for Exterior Photography with Supersensitive Film

The use of new filters known as the “3N5” and “5N5” in making exposure shots with supersensitive film is described. The need for such filters is shown to be made necessary by the nature of the color sensitivity of the supersensitive film. The effect of these filters on the required exposure time, lens aperture, or illumination incident upon the object being photographed is discussed in relation to the filter factors of the new filters. The paper concludes by outlining a simple method of applying the numerical value of the filter factors to particular cases.

Print ISSN

0097-5834

Published

1931-11

Content type

Original Research

DOI

10.5594/J07509