Suche löschen...
The photographic news
- Bandzählung
- 12.1868
- Erscheinungsdatum
- 1868
- Sprache
- Englisch
- Signatur
- F 135
- Vorlage
- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- SLUB Dresden
- Rechtehinweis
- Public Domain Mark 1.0
- URN
- urn:nbn:de:bsz:14-db-id1780948042-186800009
- PURL
- http://digital.slub-dresden.de/id1780948042-18680000
- OAI
- oai:de:slub-dresden:db:id-1780948042-18680000
- Sammlungen
- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
- Fotografie
- Strukturtyp
- Band
- Parlamentsperiode
- -
- Wahlperiode
- -
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Ausgabe
- Parlamentsperiode
- -
- Wahlperiode
- -
-
Zeitschrift
The photographic news
-
Band
Band 12.1868
-
- Titelblatt Titelblatt I
- Kapitel Preface III
- Ausgabe No. 487, January 3, 1868 1
- Ausgabe No. 488, January 10, 1868 13
- Ausgabe No. 489, January 17, 1868 25
- Ausgabe No. 490, January 24, 1868 37
- Ausgabe No. 491, January 31, 1868 49
- Ausgabe No. 492, February 7, 1868 61
- Ausgabe No. 493, February 14, 1868 73
- Ausgabe No. 494, February 21, 1868 85
- Ausgabe No. 495, February 28, 1868 97
- Ausgabe No. 496, March 6, 1868 109
- Ausgabe No. 497, March 13, 1868 121
- Ausgabe No. 498, March 20, 1868 133
- Ausgabe No. 499, March 27, 1868 145
- Ausgabe No. 500, April 3, 1868 157
- Ausgabe No. 501, April 9, 1868 169
- Ausgabe No. 502, April 17, 1868 181
- Ausgabe No. 503, April 24, 1868 193
- Ausgabe No. 504, May 1, 1868 205
- Ausgabe No. 505, May 8, 1868 217
- Ausgabe No. 506, May 15, 1868 229
- Ausgabe No. 507, May 22, 1868 241
- Ausgabe No. 508, May 29, 1868 253
- Ausgabe No. 509, June 5, 1868 265
- Ausgabe No. 510, June 12, 1868 277
- Ausgabe No. 511, June 19, 1868 289
- Ausgabe No. 512, June 26, 1868 301
- Ausgabe No. 513, July 3, 1868 313
- Ausgabe No. 514, July 10, 1868 325
- Ausgabe No. 515, July 17, 1868 337
- Ausgabe No. 516, July 24, 1868 349
- Ausgabe No. 517, July 31, 1868 361
- Ausgabe No. 518, August 7, 1868 373
- Ausgabe No. 519, August 14, 1868 385
- Ausgabe No. 520, August 21, 1868 397
- Ausgabe No. 521, August 28, 1868 409
- Ausgabe No. 522, September 4, 1868 421
- Ausgabe No. 523, September 11, 1868 433
- Ausgabe No. 524, September 18, 1868 445
- Ausgabe No. 525, September 25, 1868 457
- Ausgabe No. 526, October 2, 1868 469
- Ausgabe No. 527, October 9, 1868 481
- Ausgabe No. 528, October 16, 1868 493
- Ausgabe No. 529, October 23, 1868 505
- Ausgabe No. 530, October 30, 1868 517
- Ausgabe No. 531, November 6, 1868 529
- Ausgabe No. 532, November 13, 1868 541
- Ausgabe No. 533, November 20, 1868 553
- Ausgabe No. 534, November 27, 1868 565
- Ausgabe No. 535, December 4, 1868 577
- Ausgabe No. 536, December 11, 1868 589
- Ausgabe No. 537, December 18, 1868 601
- Ausgabe No. 538, December 24, 1868 613
- Register The Index To Volume XII 619
-
Band
Band 12.1868
-
- Titel
- The photographic news
- Autor
- Links
- Downloads
- Einzelseite als Bild herunterladen (JPG)
-
Volltext Seite (XML)
249 The apparatus is composed of two main parts, consisting, firstly, of a circular box 6 inches in diameter and 2} inches in thickness, constructed to contain fifty or any other convenient number of prepared and sensitized glasses, each 1} inches square. Those glasses arc brought by moans of the simple rotation of the case one after another directly over a door which opens and shuts automatically. The second part of the invention consists of the photographic apparatus or camera itself, which forms the principal part of the invention. This apparatus is of the form, dimensions, and appearance of an ordinary opera glass. The glass plates used in tho camera are exquisitely sensitive, and will keep so for twelve months, and the images taken may be developed at any interval after exposure. The two tubes of the opera glass are furnished with two lenses exactly similar in focus; one of these serves to project the image to bo taken on to the ground focus sing glass which occupies the largo part of the tube, the other to produce the imago on tho prepared glass plate, which occupies a small dark chamber formed in the opposite tube. The circular box in which are arranged the prepared glass plates is pushed over an opening in this chamber provided with appropriate grooves; the doors of the box and of the dark chamber are simultaneously opened, and a prepared glass plate falls from the box into the dark chamber. When the view has been taken the apparatus is turned upside down, and the glass plate which has been exposed will fall back into its place in the box, which is then removed. The door of this latter closes, and a small movement to the right or loft brings another prepared glass plate over the door and the opening in the camera. As the place of each prepared glass plate is numbered, all danger of using a glass twice over is avoided. The tube which contains the ground focussing glass is provided with a magnifying power to facilitate tho finding of tho focus ; that which contains tho dark chamber is provided with a spring and screw to hold tho prepared glass in its place ; this tube is likewise furnished with a very convenient stop or blind, which, when tho instrument is fixed and tho focus found, may bo opened and closed according to the time of exposure. When all the prepared glass plates in tho box have been exposed they may bo removed in artificial light and placed in tho supply box, from which an equivalent number of frosh glasses may bo taken. Within the space or size, therefore, of an opera glass, a drinking cup, and a pistol case for extra glasses, a man may take and bring homo with him two or three thousand views. If he bo a photographer ho will develop tho views himself; if not, bo will give them to a professional man, who for a trifling expense will complete and enlarge them for him. So great is the facility of enlargement, and so perfect are the results, that it is quite an undecided question whether it would not bo wiser in all cases to adopt the system of taking small views. A very perfect stand has been devised uniting the requisite rigidity with great lightness ; it is a simple socket and upright post provided with an universal joint of groat simplicity, which permits of tho rapid fixing and removal of tho instrument. METHOD OF ENLARGING. BY JAMES SIMPSON. This method of enlarging, or rather tho arrangement of apparatus for carrying it out was only provisionally pro tected. The specification is as follows;— My invention is designed for the purpose of facilitating the process of obtaining enlarged photographic pictures from small negatives, and also for producing from such negative a superior positive print than is obtained with tho process now adopted : and the improvements consist in the employment and use of an ordinary photographic camera and lens in connection with an elongated conical dark tube or other shaped box, which may be constructed of one given length or arranged telescopically in order that it may bo diminished or elongated in length. Tho camera or cameras are connected with tho dark box so as to have tho lens enclosed and embraced by tho narrow end of tho cone, or inserted in one side of the box, the opposite end or base being provided and enclosed with a slide or slides con structed like the ordinary dark slide of a camera, in order that it can receive a sheet of paper or other material having a pre viously prepared sensitized surface ; the ordinary dark slide of the camera at the reverse end and outside the conical box is arranged so as to receive the negative to be printed from, which thereby becomes the only medium through which the fight entering the box will be allowed to penetrate, the rays of light so entering the box being diffused and governed accord ing to the opacity or transparency of the negative, become in their passage through the lens gradually enlarged until they strike upon and are received by the previously sensitized sur face placed at tho base of the cone, the result of which is a direct enlarged positive print, the depth or intensity of which is regulated according to tho time tho sensitizod surface is exposed to tho action of light through tho negative and lens. The conical dark box is provided with sliding doors, one near the adjusting screw of the lens, and the other for the operator to look through, in order that the greatest nicety of focus may be obtained before exposing the sensitized surface, the doors being closed before such exposure. INSTANTANEOUS PHOTOGRAPHY A QUARTER OF A CENTURY AGO. A description of instantaneous photographic portraiture upwards of a quarter of a century ago seems at first sight somewhat startling, and might lead to the question, Have we really progressed ? A little reflection would, however, leave little doubt on that subject, but would not deprive of interest an account of the operations in a photographic portraitist’s establishment six-and-twenty years ago. A correspondent has called our attention to the following ex tract from the Spectator of April 16th, 1842, describing the late Mr. Claudet's operations at the Adelaide Gallery when photography itself was a novelty and a wonder. It seemed sufficiently wonderful to have one’s “ portrait in little ” limned by the sun in a few seconds, but now it is done instantaneously ; a passing expression is transferred to a plato, and tho “ Cynthia of tho minute ”—or rather of the moment— is caught and clapped into a case in no time. This magical celerity iu taking photographic likenesses by the Daguerreo type, at tho Adelaide Gallery, is tho result of some improve ment in the process recently made by M. Claudet, who ha's also greatly improved the pictorial effect of the miniatures by the introduction of backgrounds, and ho adopts a method of fixing the imago peculiar to himself. Tho momentary quickness with which the likeness is taken prevents the necessity for re taining a fixed look and posture for a certain time ; this is not only more agreeable to the sitter, but gives a life-like ease and vivacity to the photographic portraits : thus, the objections made to their stern and gloomy expression are obviated in a gieat degree, the most transient smile being reflected in the polished surface of the plate as in a mirror. The addition of a background of trees, architecture, or a library, takes away from the metallic effect of the plato, and gives to the miniature the appearance of an exquisitely finished mezzotint engraving seen through the wrong end of an opera glass. This addition is made by simply placing a scene, painted in distemper in neutral tint, behind the sitter, and arranging the focus of the lens of the camera so that the upper part of the figure is shown. By diminishing the size of the head, the defects arising from an exaggeration of facial peculiarities are got rid of, and the salient points of the physiognomy are, as it were, concentrated ; tho fixing process, too, imparts a warm brownish tinge to the miniature, substituting the tone of a sepia drawing for the livid coldness of the metallic surface. The roof of the Adelaide Gallery is the scene of these operations, on which a chamber glazed with blue glass is erected for use iu cold and rainy weather. When it is fine the sitter is placed in the open air under an awning to screen the face from the glare of sunlight. Waiting your turn, and whiling away tho time by trying to discern distant objects through the smoke, or looking at the steeple of St. Martin’s Church that rises in bold relief before you, a courteous person invites your attention to a little square box that he holds, and, placing it on a stand directly opposite to you, begs you to remain steady for an instant. Iio lifts up the little dark curtain that veils one side of the cube-shaped box, and lets it drop directly. You suppose there is something wrong. Not at all; tho thing is done. Whatever your look was at that moment it is transfixed on the plate, and you may go to the little laboratory where the process of “ fixing ” is per formed, and, as the moisture of the preparation is evaporated from the surface, see what was the precise expression on your
- Aktuelle Seite (TXT)
- METS Datei (XML)
- IIIF Manifest (JSON)