Suche löschen...
The photographic news
- Bandzählung
- 29.1885
- Erscheinungsdatum
- 1885
- 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-id1780948042-188500006
- PURL
- http://digital.slub-dresden.de/id1780948042-18850000
- OAI-Identifier
- oai:de:slub-dresden:db:id-1780948042-18850000
- Sammlungen
- Fotografie
- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
- Bemerkung
- Seite I-II fehlen in der Vorlage. Paginierfehler: Seite 160 als Seite 144 gezählt.
- Strukturtyp
- Band
- Parlamentsperiode
- -
- Wahlperiode
- -
- Bandzählung
- No. 1390, April 24, 1885
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Ausgabe
- Parlamentsperiode
- -
- Wahlperiode
- -
-
Zeitschrift
The photographic news
-
Band
Band 29.1885
-
- Register Index III
- Ausgabe Ausgabe 1
- Ausgabe Ausgabe 17
- Ausgabe Ausgabe 33
- Ausgabe Ausgabe 49
- Ausgabe Ausgabe 65
- Ausgabe Ausgabe 81
- Ausgabe Ausgabe 97
- Ausgabe Ausgabe 113
- Ausgabe Ausgabe 129
- Ausgabe Ausgabe 145
- Ausgabe Ausgabe 161
- Ausgabe Ausgabe 177
- Ausgabe Ausgabe 193
- Ausgabe Ausgabe 209
- Ausgabe Ausgabe 225
- Ausgabe Ausgabe 241
- Ausgabe Ausgabe 257
- Ausgabe Ausgabe 273
- Ausgabe Ausgabe 289
- Ausgabe Ausgabe 305
- Ausgabe Ausgabe 321
- Ausgabe Ausgabe 337
- Ausgabe Ausgabe 353
- Ausgabe Ausgabe 369
- Ausgabe Ausgabe 385
- Ausgabe Ausgabe 401
- Ausgabe Ausgabe 417
- Ausgabe Ausgabe 433
- Ausgabe Ausgabe 449
- Ausgabe Ausgabe 465
- Ausgabe Ausgabe 481
- Ausgabe Ausgabe 497
- Ausgabe Ausgabe 513
- Ausgabe Ausgabe 529
- Ausgabe Ausgabe 545
- Ausgabe Ausgabe 561
- Ausgabe Ausgabe 577
- Ausgabe Ausgabe 593
- Ausgabe Ausgabe 609
- Ausgabe Ausgabe 625
- Ausgabe Ausgabe 641
- Ausgabe Ausgabe 657
- Ausgabe Ausgabe 673
- Ausgabe Ausgabe 689
- Ausgabe Ausgabe 705
- Ausgabe Ausgabe 721
- Ausgabe Ausgabe 737
- Ausgabe Ausgabe 753
- Ausgabe Ausgabe 769
- Ausgabe Ausgabe 785
- Ausgabe Ausgabe 801
- Ausgabe Ausgabe 817
-
Band
Band 29.1885
-
- Titel
- The photographic news
- Autor
- Links
- Downloads
- Einzelseite als Bild herunterladen (JPG)
-
Volltext Seite (XML)
April 24, 1885. ] THE PHOTOGRAPHIC NEWS. fiefinitio)', and the composites here given will doubtless form for a long time the best available definition of the Jewish expression and the Jewish type. There is one consideration which lends an interest other than scientific to these composites of Mr. Galton. Most of the readers of this journal will be familiar with the por traits of spirits which gratify the curiosity of spiritualists, and cause ironical laughter among those who know the easy trick by which these plates may be manufactured. But here we have something more ghostly than a ghost, more spiritual than a spirit. The thing, person, spirit, ghost, idea, type, or what you will that looks at us in A has no bodily existence ; and yet there is life in its eyes. And it has a definite expression which can only mean that it ex presses something. In the present instance, as the components can in all probability trace back to a common ancestor, the composite face must represent, if it represent anything, this Jewish forefather. As the spectroscope has bridged over the abysms of space, and has told the com position of Orion’s Belt, so the photographic lens seems, in these composites, to traverse the ons of time and bring up into visible presentment the heroes of the past. In these Jewish composites we have the nearest representa tion we can hope to possess of the lad Samuel as he ministered before the Ark, or the youthful David when he tended his father’s sheep. Or, if this is saying too much, we may see in the composites the Jewish youngsters who “coolly appraised” the ancient prophet, ar their components seem to have done with the modern scientist. Let me, in conclusion, recommend—of course with an eye to my own hobby—any photographer who intends taking up composite portraiture, to try his hand—but not his’prentice hand—on composites of Jewesses. I am in clined to think that there is less variation in Jewesses than in Jews, so that the composite ought to be even more in dividual. Besides, in their case portraits can be taken at a later age without fear that any part of the face will be con cealed from view, and we should thus be able to study the features when more set than in the case of the Jewish lids. The enterprising photographer who adopts my suggestion need have no anxiety about procuring components. I make bold to assort that my fair co-religionists are as con stant visitors to photographic studios as any class of her Majesty’s subjects. And if Mr. Galton has succeeded in producing such individual and beautiful composites of .Jewish boys, not of a very refined class—well, my argu; nlent is obvious, and I leave some of the professional readers of the Photographic News to carry it into effect. PHOTO-LITHOGRAPHY AND PHOTO ZINCOGRAPHY. BY MAJOR J. WATERHOUSE, B.S.C., Assistant Surveyor-General of India. Chapter XVIII.—Photo-Lithography in Half-Tones.* III. We now come to the processes in the third class, in which the photographic image is broken up by a net work or grain interposed in some way between the nega tive and the sensitive paper or other surface. Messrs. Bullock Brothers, of Leamington, who patented a methodof photo-lithography in half-tones in 1865, appear to have been the first to recognise and practically carry out the principle of breaking up the photographic image by a definite grain, though Mr. J. W. Swan patented a different process of the same kind about the same time In a paper read before the London Photographic Society in April, 1866 (News, vol. x., p. 185), Mr. J. Bullock gave a short resume of experiments he and his brother bad made in this direction. Making a grain upon the glass plate previous to its being coated with collodion to form a negative was found • Continued from page GO. I promising, but troublesome. Forming a grain upon the finished negative by coating it with a granular varnish, or by making the surface slightly adhesive and depositing a fine powder upon it, were tried, but not found satisfactory. Producing the grain in the camera by placing before the prepared plate a glass plate covered with a fine grain was also tried, but a long exposure was required, and an un pleasant pinhole appearance was given to the parts which should have been quite dense. Other methods of placing a grained medium between the negative and the paper were tried, but without success. The methods which finally were found most successful were—first, by reticulating the negative in the following manner : —A piece of ground glass, or a photographic copy on glass of some reticulated surface, was placed face to face with the negative, and a transparency taken from the two whilst in contact. From this transparency any number of negatives could be produced, each containing a granulation so marked as to give the prints on transfer paper a well- marked half-tone composed of lines or dots. The second plan, which seems to have given very good results, was to imprint a grain, by aquatint or otherwise, upon the unsensitised gelatine paper—all that was required being to sensitise the paper with bichromate of potash, and print from an ordinary negative. The exposed surface was then inked and washed in the ordinary way. Some excellent specimens were produced and published in the News and other photographic journals, but the process seems to have fallen out of use. In Mr. Swan’s process he first produced what he termed a crayon photograph—i.e., one in which gradation of shade was produced by dots of opaque matter more or less aggregated as the shading is darker or lighter, and there fore correspon ling to a crayon drawing in the principle on which the gradation of shade is produced. Such a crayon photograph may be produced in various ways, but Mr. Swan preferred to obtain it by means of a gelatine tissue containing a certain proportion of charcoal or other opaque substance, in such a state of division or granulation that when diffused through the gelatine solution and spread upon glass in a thin layer, the opaque particles will show distinct granularity between particle and particle. This tissue was either prepared ready sensitized with bichromate, or could be sensitized as required. It was exposed under a photographic negative or positive, that surface of the tissue which was uppermost during the solidification of the gelatine being placed next to the cliche, and care being taken that the light might fall at right angles to the plane of the cliche. After exposure the exposed urface of the tissue was coated with a solution of india-rubber and dammar in benzole, and mounted on a glass coated with the same solution, the solvent being allowed to evaporate. The image was then ueveloped in warm water in the usual way. The crayon photograph could also be produced by the dusting process. Having obtained the crayon photograph by the above methods, it was used instead of an ordinary negative or positive for the production of a transfer print in the usual way. A process of this class by which have been produced some of the best results in photo-lithographic half-tone the writer has seen, was published last year in the Photo- graphisches Correspondenz by Herr Mariot, of the Military Geographical Institute at Vienna, who has done a great deal in perfecting various photo-mechanical processes. Herr Mariot’s work is specially interesting because he has thoroughly investigated the question of grain, and has succeeded in working out a method which, being equally applicable to Photo-typography Photo-lithography and Photo-gravure, may be termed a “Universal Photographic Printing Method” (see News, vol. xxvii., p. 802). Herr Mariot’s process is based upon the well-known principle that if we copy a negative of a line or point, the image of the line or point will increase in breadth and
- Aktuelle Seite (TXT)
- METS Datei (XML)
- IIIF Manifest (JSON)