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A COMPARISON OF THE SQUARE WAVE RESPONSE OF THREE MICROSCOPES COMMONLY USED IN PHOTOINTERPRETATION

QC 351 A7 no. 53 / The optical performance of three stereomicroscopes commonly used for photo - interpretation is described in terms of magnification, field of view, and square wave response (SqWR). For a given field size, the SqWR can be used to compare the amount of information in the image of each microscope. The SqWR was determined by scanning a square wave test target at four field positions for each of four field sizes (corresponding to magnifications of 6, 12, 25, and 50X). The measured SqWR was used to evaluate the relative ability of each microscope to perform two typical photointerpretation tasks: (1) detailed viewing of a target, and (2) scanning or searching for a target. For these tasks the Wild M -5 stereomicroscope was found to be somewhat better than the Bausch and Lomb 240 stereomicroscope, and both were found to be superior to the Olympus SZ III stereomicroscope. The SqWR curves are included and can be used to compare the stereo - microscopes for various photointerpretation tasks.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/621649
Date15 May 1970
CreatorsHooker, R. Brian
PublisherOptical Sciences Center, University of Arizona (Tucson, Arizona)
Source SetsUniversity of Arizona
Languageen_US
Detected LanguageEnglish
TypeTechnical Report
RightsCopyright © Arizona Board of Regents
RelationOptical Sciences Technical Report 53

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