The microscope; an introduction to microscopic methods and to histology (1917)
Gage, Simon Henry, 1851-1944 · [Ithaca, N.Y.] The Comstock Pub. Co. · leaf 224
hold the camera at a fixed ex- with an objective (ob.) inthe lower end and a fo-cusing glass (fg) above.(See fig. 107 for fuller de-scription.) tension, most of the focusing can be ac-complished by sliding the whole camera upand down the vertical graduated support(fig. 126). § 334. — Focusing… … focused on the central scratch, which must be in the exact plane wherethe sensitized photographic surface will be during the exposure. Ifnow an object is brought to an accurate focus at this plane, it willalso be in focus on the sensitized surface of the dry plate. Exceptfor aid in arranging the…
Microscopy · Microscopy -- Technique
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