The American annual of photography . l ) /o / / drams of each stock to be diluted to make total volume 3 ounces for tray or 10 ounces for tank development. Rodinal (Citol, Azol, Certinal). 20 26 35 45 60 80 105 135 minims solution to be made up to 3 ounces for tray or 9 ounces for tank. T. C. Dilution of Developer.—Watkins Thermo Pyro-Soda VQ 3. Dilution of Dev. V VQ Metabisulphite grs. Potass * 2\ Metol 84\ H\or 2^ 31/ 21-Sod. 16^ 22 24f 33. Water 30 5 30 3 30 3 Q or 3 MQ M MS VS 4^/ 3 4. 5. 9. 12. 2.\ •4 2^0
The American annual of photography . l ) /o / / drams of each stock to be diluted to make total volume 3 ounces for tray or 10 ounces for tank development. Rodinal (Citol, Azol, Certinal). 20 26 35 45 60 80 105 135 minims solution to be made up to 3 ounces for tray or 9 ounces for tank. T. C. Dilution of Developer.—Watkins Thermo Pyro-Soda VQ 3. Dilution of Dev. V VQ Metabisulphite grs. Potass * 2\ Metol 84\ H\or 2^ 31/ 21-Sod. 16^ 22 24f 33. Water 30 5 30 3 30 3 Q or 3 MQ M MS VS 4^/ 3 4. 5. 9. 12. 2.\ •4 2^01 7^f 5 \6 8 4ilor 9 6 \12 4 5 8 9 18 /12 28. 37. 50. 66. 82. 42. 55. 70. 99. 123. 30 3 30 3 30 3 30 3 30 3 *For flashhght pictures equal parts of Hydrochinon and Eikonogen give softer —A single portion of developer should be used for only one plate, butthe used developer (except pyro) should be saved for paper. If fog occurs,add to each ouncei of water used , 7A to 10 grs. dry sulphite. 288. BETSEY. Edna Leighton Tyler. TABLE FOR CALCULATING DISTANCES IN ENLARGING OR REDUCING From The British Journal Photographic Almanac Focus ofLens Times of Enlargement and Reduction Inches 1Inch 2Inch-es 3 Inch-es 4 Inch-es 5Inch-es 6 Inch-es 7Inch-es 8Inch-es 2 44 63 82^ 10 12 2% 14 23^ 16 22/7 18 2K 2y2 55 7^3M 10 3M 123^33^ 153 17^2%o 20 2% 223^ 23/16 3 66 9 43^ 124 15 3^ 183% 21 33^ 243% 27 3H 7 7 103^ 144% 17^ 434 21 4>i 243^4Vi2 284 31H3%o 4 88 126 16 53^ 20 5 244K 284^ 32 4^7 3643^ 43^ 99 133^ 186 223^ 27 5% 313^5M 36 5y7 403^ 5yi6 5 1010 15 7^ 206^ 256M 306 35 40 55/7 45 ^¥2 1111 16^ 22 73^ 273^6^ 336>^ 383^ 65/12 4462/7 493^ 63/16 6 1212 189 24 8 30 7J^ 36 7K 42 7 4866/7 546% 7 1414 21 103^ 289M 35 42 49 8K 568 63 7K 8 1616 2412 32 lOH 4010 489K 56 64 9^7 729 9 1818 27131/^ 3612 4511^ 54lOf^ 63 72102/7 81 103/g The object of this table is to enable any manipulator who is about to enlarge (or reduce)a copy any given number of times to do
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
