The research that has been done deals with the increase in the precision of measurement under low magnification. There were four factors used in the field of view of a microscope to attempt an increase in precision. The factors were 10X and 20X magnifications, light intensities, and Kodak Wratten filters Nos. 58 and 45A. The precision of measurement was increased in the positive ticks and edges with factors other than high magnification.
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School of Photographic Arts and Sciences (CIAS)
Coble, Alan, "Psychophysics of the measurement of the distance between two negative ticks, two positive ticks, and two edges" (1980). Thesis. Rochester Institute of Technology. Accessed from
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