. The book of photography; practical, theoretical and applied. 0 2720 3840 1250 J 570 1660 2080 3040 3720 5200 1250 iV m- Oil immersion 570 16G0 2080 3040 3720 5200 1380 TABLE SHOWING MAGNIFICATIONS OF ZEISSS HIGH-POWER ; Objective. X. A. Designation or Focus. D D ^ Dry Series 0-85 E 0-90 F 0-90 1) 7 0-75 H > W ater 1-18 J 3 1-18 ^in. Oil immersion 1 -30 3 mm 2 mm. !• Apochromatic 1-301-40 Descriptive Xo. (magnification) of Eyepieces. 440720 1040440740 1040 1040667 1000 880 1320 1760 2640 1440 2160 2880 2080 3120 4160 6240 880 1320 1760 2640 1480 2220 2960 4440
. The book of photography; practical, theoretical and applied. 0 2720 3840 1250 J 570 1660 2080 3040 3720 5200 1250 iV m- Oil immersion 570 16G0 2080 3040 3720 5200 1380 TABLE SHOWING MAGNIFICATIONS OF ZEISSS HIGH-POWER ; Objective. X. A. Designation or Focus. D D ^ Dry Series 0-85 E 0-90 F 0-90 1) 7 0-75 H > W ater 1-18 J 3 1-18 ^in. Oil immersion 1 -30 3 mm 2 mm. !• Apochromatic 1-301-40 Descriptive Xo. (magnification) of Eyepieces. 440720 1040440740 1040 1040667 1000 880 1320 1760 2640 1440 2160 2880 2080 3120 4160 6240 880 1320 1760 2640 1480 2220 2960 4440 2080 3120 4160 6240 2080 3120 4160 6240 1333 2000 2667 4000 2000 3000 4000 6000 3960648093603960666093609360600090lO Highestlimit of usefulmagnili- cation. 900 950 950 790 1250 12.)0 1380 1380 1480 34 330 THE BOOK OF PHOTOGRAPHY. PvEMARKS OX FOREGOING TaBLES. It will be seen from these tables thatthere is no advantage to be derived, otherthan that of increased magnification, by limit of useful magnification. For photo-micrography the projection eyepieces^.
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