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
- 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. 1380, February 13, 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)
100 THE PHOTOGRAPHIC NEWS. LFEBRUARY 13, 1885. and potass were blackguarded, the gold I declared sus picious, and even poor acetate soda had more sins heaped upon its head than it could bear, the small stock I had going down the sink. To be brief, I tried in desperation from the same negatives, 5-7 and even ten minutes’ expo sure, and to my great delight managed to obtain the long- looked-for bricky-red. The millennium had arrived. The point of the above notes is, that the makers are much understating the requisite exposure; they are much too modest and afraid of exaggeration. But, joking apart, in my opinion they are doing their wares and themselves much harm by endeavouring to make out the necessary exposure to be so extremely quick. Moreover, I can see no object in it; surely five minutesis quite fast enough for anything. This is where the majority will fail. Even an under-exposed print will develop fairly fast, and it is only when toning is attempted that the first suspicion of failure will dawn. The natural consequence is, the expe rience of many may be summed up : “ I can manage the development all right, but cannot get the tone I should like.” Doubt will not be cast upon the exposure, but upon the toning. Perhaps it would be better to explain what I mean as to an under-exposed print developing fairly fast. A print that, when finished, will give a cold grey tone, appears quite as quickly in the developer as anyone would be led to expect from the detailed instructions issued. To those who have had the opportunity of seeing the process worked by an experienced hand, I am writing nothing new. But these I take to be few, and the majority of your readers, among which I know are many amateurs, will have to be guided entirely by what they read. There fore plead I for more explicit instructions with the sample boxes. It is useless to state—“Stop the print as soon as it becomes as dark as required, because it loses nothing in subsequent operations.” The actual tone of the print is the point. If, in order to get the detail out, one has to develop until the print is purple-black, the toning bath will not aid in obtaining brown tones. More exposure must be given in order to obtain the same detail with less development. Just one more fling at the poor manufacturers, and I'll leave them to their own consciences. They draw par ticular attention to the wide range of tone obtainable on this paper. Those who have experimented appreciate this to the full extent. The range is all there; what is wanted is some decent certainty of obtaining a dozen prints alike in tone. When this is granted, we shall love the makers more. My experience points to ferrous-oxalate diluted with water for brown and red tones, and next to that ferrous-citrate. The latter solution, too, in the hands of amateurs, has the very great advantage of lasting much longer. In conclusion, I may say that three different brands of paper and four different developers have been used in my experiments. ebiews. The Year’s Art, 1885. By M. B. Huish and D. C. Thomson. (London: Sampson Low, Marston, Searle, and Rivington.) To the artist, “The Year’s Art” is as essential as the “Year-Book of Photography” is to the photographer; but every photographer will do well to obtain the artists’ annual. The present issue of the “ Year’s Art ” is considerably enlarged, and among the matter of especial value to the photographic fraternity may be mentioned five plates of selections from the Royal Academy Exhibition of 1884, and over a dozen plates giving similar selections from other art exhibitions of the past year ; including the Water Colour Society, the Institute of Painters in Water Colours, the Grosvenor Gallery, and also the exhibition-’ of some half-dozen foreign and provincial art societies. The work under hand is a comprehensive art directory, giving names and addresses of professional artists in Great Britain, artist’s calendar, engravings and books published during the year, legal decisions, and obituary ; besides a concise but comprehensive guide to museums, galleries, schools, clubs, unions, charities, and institutions connected with art. Practical Physics. By R. T. Glazebrook and W. N Shaw; 487 pages, price 6s. (London: Longmans, GreUi and Co.) We have here just such a text-book as we may suppose to be well suited to meet the requirements of the majority of our readers ; neither so superficial and popular as to be read through almost as one would read a novel, nor M abstruse as to offer serious difficulties to a man of average education. The fact that physics as taught in the present day is so far quantitative as to be almost summed up in the one word “measurement,” is strikingly called to mind by’ glance over the work ; and by way of giving our readers’ sample we cannot do better than to quote the authors’ de scriptionof the spherometer as ordinarily used in measur ing the curvature of a lens. “ The instrument consists of a platform with three feet whose extremities form an equilateral triangle, and in the middle of the triangle is a fourth foot, which can be raised or lowered by means of a micrometer screw passing perpendicularly through the centre of the platform. The readings of the spherometer give the perpendicular distance between the extremity of this fourth foot and the plane of the other three. “ It is used to measure the radius of curvature of a spherical surface, or to test if a given surface is truly spherical. “The instrument is first placed on a perfectly plane surface- piece of worked glass—and the middle foot screwed down until it touches the surface. As soon as this is the case, the instru ment begins to turn round on the middle foot as a centre. The pressure of the hand on the screw should be very light, in order that the exact position of contact may be observed. The spherometer is then carefully removed from the glass, and the reading of the micrometer screw is taken. “ The subjoined figure will help us to understand how this i done. A n c are the ends of the three fixed feet; D is the movable foot, which can be raised by turning the milled he’’ at E. This carries round with it the graduated disc F c, and as the screw is turned the disc travels up the scale H K. Te graduations of this scale are such that one complete revolution of the screw carries the disc from one graduation to the next Thus in the figure the point F on the screw-head is opposite a division of the scale, and one complete turn would bring this point opposite the next division. In the instrument in the figure the divisions of the scale are half-millimetres, and th’ millimetres are marked 0, 1, 2. Thus only every second division is numbered. “ But the rim of the disc F G is divided into fifty parts, and each of these subdivided into ten. Let us suppose that division 12 of the disc is opposite to the scale at F, and that the milled head is turned until division 36 comes opposite. Then the head has been turned through 24 (36—12) larger divisions, but one whole turn or fifty divisions carry the point D throng 11
- Aktuelle Seite (TXT)
- METS Datei (XML)
- IIIF Manifest (JSON)