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The photographic news
- Bandzählung
- 7.1863
- Erscheinungsdatum
- 1863
- Sprache
- Englisch
- Signatur
- F 135
- Vorlage
- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- SLUB Dresden
- Lizenz-/Rechtehinweis
- Public Domain Mark 1.0
- URN
- urn:nbn:de:bsz:14-db-id1780948042-186300004
- PURL
- http://digital.slub-dresden.de/id1780948042-18630000
- OAI-Identifier
- oai:de:slub-dresden:db:id-1780948042-18630000
- Sammlungen
- Fotografie
- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
- Strukturtyp
- Band
- Parlamentsperiode
- -
- Wahlperiode
- -
- Bandzählung
- No. 244, May 8, 1863
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Ausgabe
- Parlamentsperiode
- -
- Wahlperiode
- -
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Zeitschrift
The photographic news
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Band
Band 7.1863
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- Titelblatt Titelblatt -
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- Register Index 619
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Band
Band 7.1863
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- Titel
- The photographic news
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May 8, 1863.] THE PHOTOGRAPHIC NEWS. 221 4 drachms 80 grains f y je ef The plates are developed and well washed, and put aside jo® 20 ounces 10 minims. 6 e 200 minims 16 ounces ounces ounce 4 1G 1 Water Acetic acid 15 grains 15 minims 1 ounce quantum suff. Collodion, a good commercial bromo-iodized sample; frequently Ponting’s or Rouch's, and sometimes mixed. Iron ... Acetate of soda W ater Pyroligneous acid Alcohol 4 drachms . 1 drachm 17 ounces 2 1 ounce 30 grains ... 15 minims ... 1 ounce ... quantum suff. saturated solution of 10 p b i 3 200 grains 1 ounce 20 ounces 2 „ Developing Solution— Protosulphate of iron Glacial acetic acid ... Water । ... Alcohol Intensify before fixing with Pyrogallic acid Acetic acid Water 40 grains 2 ounces 20 „ Protosulphate of iron Acetic acid (glacial) W ater Alcohol In winter :— Protosulphate of iron Acetic acid (glacial) W ater Alcohol with pyrogallic acid allowed me to dispense with the addi tion of any other acid, excepting the pyrogallate of alumina, which may be employed alone, and demands the usual dose of acetic acid. If the sulphate of iron was always successful, I should dispense with preparing another developing agent as prompt in its action ; but it very often fails in cases where the pyrogallic acid and nitrate of alumina may give very good negatives. If, for example, we employ a collodion simply iodized with iodide of cadmium, sensitized in a neutral nitrate bath, the sulphate of iron will almost always blacken the exposed film, while pyrogallic acid united with nitrate of alumina will supply all the elements of success.—Bulletin de la Societe Frangaise de la Pliotogrupliie. and a few drops of a fresh silver solution. In printing use a good commercial albumenized paper. Excite in a 90-grain bath. Tone, and fix in a bath of hypo and gold, using great care, and wash well. Mr. H. P. Robinson’s Formula:.—The prints are rich, round, delicate and vigorous. Tone, deep purple, brown, and warm neutral tints. The only card portraits specifically rewarded with a medal at the International Exhibition, and at the Exhibition of the Scottish Photographic Society. Nitrate bath— Pure recrystallized nitrate of silver 12 drachms Developing solution— Protosulphate of iron Acetic acid Water Alcohol Intensify before fixing with— Pyrogallic acid Acetic acid Water ... and in a little fresh silver solution. 18 re f t0 re 0g - ■ t- )® o? jeb 16 PORTRAITURE. Mr, T. R. Williams’s Formula. — The prints are exquisitely delicate, perfect, and brilliant. Tone warm, neutral tint. Mr. Williams prefers a 30-grain nitrate bath to a stronger solution. A good commercial nitrate of silver, purified with carbonate of soda, if necessary. A trace of nitric acid, generally less than a drop in a pint of solution. A commercial bromo-iodized collodion. Frequently a mixture of that of different makers, not unusually Mawson and Rouch. Developing solution, in summer :— bath, usual formula, but made always a week in advance of its use. Never use twice. Fix in abundance of hypo, one part in six of water. From eighty to one hundred card pictures fixed in about two quarts of hypo, which is never used more than one day. Wash for four hours in constant changes of water, drain a few minutes, and wash a few minutes without leaving off, then dry without further soaking. Messrs. Southwell Brothers’ Formula. — The prints are, perhaps, the most brilliant published, and very round, and finely modelled. Tone, rich, warm, sepia and bishe tints. The silver ba'h contains 40 grains to the ounce, slightly acid, with nitric acid. Collodion, a good commercial bromo-iodized ; frequently Mawson’s. * We reprint the above from the Ybah-Book or PuOroGRAPIIY and 1 otoanarino Nuws Almanac for 1863, as meeting many questions which frequently reach us. 5 1 T Fix in a dipping bath containing hyposulphite of soda, and wash very thoroughly. Intensify after the negative is dry, with bichloride of mercury and iodide of potassium, as used by the late Mr. Lacy. Sometimes, before drying, but after fixing, with AUTHENTICATED FORMULA. contributed by first-class photographers* Wb are enabled, by the courtesy of several gentlemen, who are recognized by the photographic world as amongst the very ablest exponents of the art, to publish the formula! by which they habitually work. In most cases these formulas are simple enough, and are just the same as are generally used by others ; but their publication possesses this advan tage : where it conveys nothing new, it gives confirmation to what is ; for the most valuable confirmation of the worth of any process, is the publication of successful pictures. It, moreover, confers a dictum we have often urged, that success is due to the man rather than the method. An intelligent application of a process is essential to good photography ; and a thoughtful application of art principles is essential to a good picture. Ruskin observes, that “ patience and sand paper will not make a picture,” although they may give a smooth surface ; and the most perfect formula will not yield an artistic photograph, except it be in the hands of an artist. Print on good commercial albumenized paper excited on a 60-grain bath. Tone in a gold and acetate of soda bath, usual formula, made always a week or two in advance. Mr. Me Nan's Formula.—The prints are distinguished by especial brilliancy, with exquisitely deep and transparent shadows. The tones are rich purple browns. The silver bath is prepared in the usual way, from re crystallized nitrate of silver, 35 grains to the ounce of water. If, on using it for the first time, it shows a tendency to fog, it is slightly acidified with nitric acid. The collodion, made after Hardwich's formula!, frequently mixed with commercial bromo-iodized samples. Developing solution, 15 grains of iron to the ounce of water, when the light is good ; but in cold weather, and weak indifferent light, it is increased to 20 grains. When intensity is lacking, use— of 381 „t pyro and silver. In printing, with albumenized paper prepared with 10 grains of chloride of barium, use a silver bath, strength from 30 grains to 50 grains per ounce. With most com mercial papers containing an unknown proportion of chlo ride, use an 80-grain silver bath, with a trace of nitric acid, and float one minute. Print in diffused light, not much deeper than required in finished print. Wash and tone in acetate of soda and gold
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