en the picture will not be sharp no matter howaccurately one may focus. Indeed, so necessary is the coincidence of the plane ofthe focusing screen and sensitive surface that some photo-micrographers put thefocusing screen in the plate holder, focus the image and then put the sensitiveplate in the… … <DC < ooI 0-<DCOODCO O hOI0. o i III QUl> ODC0- >■ u -J 0) -J< Fig. 143. CH. VIII.} PHOTO MICROGRAPHY. 187 Fig. 143. IValmsleys Improved Pholo-Micrographic Camera. In this figure isshown an excellent form of photo-micrographic camera for use with a horizontalmicroscope. It has the…
Microscopy
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