. The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing. pecially should great care be taken to prevent the contactof the hyposulphite of soda with the vessels or materials, ex-cept in its proper place, of a fixing MISPLACEMENT OF LENSES. 561 Misplacement of Lenses. It frequently occurs that photographers, after separatingthe combinations of lenses for cleansing and other purposes, meniscus, and C the crown lens of the back combination, intheir proper positions. This will enable those who are in trouble to determine forthemselves if their le
. The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing. pecially should great care be taken to prevent the contactof the hyposulphite of soda with the vessels or materials, ex-cept in its proper place, of a fixing MISPLACEMENT OF LENSES. 561 Misplacement of Lenses. It frequently occurs that photographers, after separatingthe combinations of lenses for cleansing and other purposes, meniscus, and C the crown lens of the back combination, intheir proper positions. This will enable those who are in trouble to determine forthemselves if their lenses are in proper position or not, andin many cases it will save them express charges. The foregoing rule does not apply to the Dallmeyer lenses,in which the curves and positions of the various lenses areentirely different, and each lens so fastened in its cell thatit is impossible to misplace either of them. misplace them.
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