The stereomat wild B-8

Abstract

For the best results in orthophoto printing, tone, contrast and richness of detail, some photometric requirements must be met and the operating instructions must be followed. However, although these are stricter than those which apply to an optical orthoprojector, a trained photographer will find no difficulty in following them. The negatives of aerial photos have to be printed on a machine which offers electronic compensation and the density diapositives must be between 0, 35 and 1.00. An orthophoto test must be made on a-small section of the pair of prints, and in the case of an homogeneous block of prints, every three or fourth pair of prints, so as to determine in advance the aperture, exposure, light and contrast to be used so that the best possible image can be obtained free of lines, rich in detail, and suitable in tone.