Suche löschen...
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. 245, May 15, 1863
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Ausgabe
- Parlamentsperiode
- -
- Wahlperiode
- -
-
Zeitschrift
The photographic news
-
Band
Band 7.1863
-
- Titelblatt Titelblatt -
- Ausgabe Ausgabe 1
- Ausgabe Ausgabe 13
- Ausgabe Ausgabe 25
- Ausgabe Ausgabe 37
- Ausgabe Ausgabe 49
- Ausgabe Ausgabe 61
- Ausgabe Ausgabe 73
- Ausgabe Ausgabe 85
- Ausgabe Ausgabe 97
- Ausgabe Ausgabe 109
- Ausgabe Ausgabe 121
- Ausgabe Ausgabe 133
- Ausgabe Ausgabe 145
- Ausgabe Ausgabe 157
- Ausgabe Ausgabe 169
- Ausgabe Ausgabe 181
- Ausgabe Ausgabe 193
- Ausgabe Ausgabe 205
- Ausgabe Ausgabe 217
- Ausgabe Ausgabe 229
- Ausgabe Ausgabe 241
- Ausgabe Ausgabe 253
- Ausgabe Ausgabe 265
- Ausgabe Ausgabe 277
- Ausgabe Ausgabe 289
- Ausgabe Ausgabe 301
- Ausgabe Ausgabe 313
- Ausgabe Ausgabe 325
- Ausgabe Ausgabe 337
- Ausgabe Ausgabe 349
- Ausgabe Ausgabe 361
- Ausgabe Ausgabe 373
- Ausgabe Ausgabe 385
- Ausgabe Ausgabe 397
- Ausgabe Ausgabe 409
- Ausgabe Ausgabe 421
- Ausgabe Ausgabe 433
- Ausgabe Ausgabe 445
- Ausgabe Ausgabe 457
- Ausgabe Ausgabe 469
- Ausgabe Ausgabe 481
- Ausgabe Ausgabe 493
- Ausgabe Ausgabe 505
- Ausgabe Ausgabe 517
- Ausgabe Ausgabe 529
- Ausgabe Ausgabe 541
- Ausgabe Ausgabe 553
- Ausgabe Ausgabe 565
- Ausgabe Ausgabe 577
- Ausgabe Ausgabe 589
- Ausgabe Ausgabe 601
- Ausgabe Ausgabe 613
- Register Index 619
-
Band
Band 7.1863
-
- Titel
- The photographic news
- Autor
- Links
- Downloads
- Einzelseite als Bild herunterladen (JPG)
-
Volltext Seite (XML)
240 THE PHOTOGRAPHIC NEWS. [May 15, 1863. a few prints. If a small quantity proviously melted be poured into a bottle and allowed to cool it may be got ready for use in two or three minutes by standing the bottle in hot water.” Photography fob Tourists.—A new work on “ Dry Col lodion Processes,” written with an especial view to the wants of tourists and of missionaries and scientific travellers, by Dr. Kemp, of Cambridge, is announced as in the press, and shortly to be published. Uo Uorxespondents. Tyro Tannin.—Our own experiments with the recent variations of the tannin process have not been extensive. For the purpose of obtaining the best information, we have submitted your queries to Major Russell, and hopelo be able to give you his answer in our next. F. Vincent.—The collodion to which you refer has many excellent qualities ; but unfortunately some samples give the mottled reticulated effect which you describe. Reducing its thickness by the addition of equal parts of ether and alcohol will decrease the tendency, but we fear nothing will entirely remove it when present. A Poor Amateur.—We believe that pitch alone is used for attaching lenses to the holder in grinding. 2. Blotting-paper as a lining for your plate-box will be quite harmless. 3. There is no work treating especially of photo graphic lenses, nor any work on optics giving much attention to the sub ject. The only published information on the subject is scattered about, and is for the most part meagre, and often unsatisfactory and untrustworthy. There is no periodical called “ The Optician.” 4. A quarter-plate portrait combination for 13s. 6d. cannot, in the nature of things, be very good. It is quite possible that the lens No. 1 in the catalogue you name may answer your purpose, but you must remember that no ordinary quarter-plate lens is well calculated for taking card portraits of standing figures. To be well suited to the work in question a special construction is required for lenses of such short focus. For sitting figures they may answer, if good, very well, and for standing figures by using a very small aperture, which of course increases the time of exposure. We have every reason to believe the dealer you name to be a respectable man. But bear in mind in refer ence to lenses, as to everything else in the world, «the worth of a thing is just what it will bring.” A first-class article will always command a good price, a moderate article a moderate price, and a bad one a bad price. The authority whose words you quote in favour of cheapness is a very in sufficient authority on the subject of lenses, and his words were disproved by the illustrations brought forward at the time. The thorough testing of a lens is not a task which can be successfully undertaken by an entire novice. Your best plan will be to write to the dealer, as you propose, telling him the circumstances and asking him to select you one. R. T.—So far as we can see from your specimen your lenses are placed in the right position in the camera, but the partition in the camera doesnot"come sufficiently up to the ground-glass to prevent one image impinging on the other, and so causing the blurred space between them. When the lenses have no lateral movement, the usual distance between the lenses is 33 inches, so that the centre of each image may fall on the centre of each half of a 64-inch plate. G. A. B.—The small, irregular, white patches which you describe are doubt less reduced silver, and may proceed from several causes. The most com mon are contact with some reducing agent on the frame in the dark slide, insufficient acid in th bath, or the presence of organic matter, too long a time between exciting and developing ; this latter may be the case without actual drying of the film in the place. 2. We are very familiar with the brown or red deposit on the shadows which you describe, you will find it fully treated on page 361 of our fifth volume, and on page 45 of our present Year-Book. The plentiful use of citric acid, or, better still, a wash of iodine solution previous to intensifying will prevent its occurrence. 3. B, probably of the makers you name. 4. We use plates 71 by 5, and 52 by 3}. 5. The washed collodion process as described by Mr. Hislop gives the best results we have seen. Alpha.—A little more intensity in your negative would make the print not quite so heavy, or a little less printing with the present negative might be better. But the picture is by no means bad. We cannot tell you of any simple or easy mode of ascertaining whether engravings are copyright, but as a general principle you may presume that all published within the last twenty-eight years arc so. A Beginner.—The printing and tone of your print are not at all bad—the hardness is in the negative. In the toning formula you mention, the pro portion of carbonate of soda is not so large as to be dangerous, but the acetate bath is better. If you get better and softer negatives, and print as well as hitherto, the results will be good. The price of our Almanac is one shilling. The lens to which you refer will answer for a beginner. D. Buncan.—We are not aware whether any of Liesegang’s enamelled paper is to be had yet in this country. Your results with Schering’s are very good. What method do you use ? Spotty Prints.—The defect in the prints enclosed is mealiness. The best remedy we know is slow toning, and the use of toning solution a few days old. A variety of remedies have appeared in our pages, but it sometimes happens with some samples of Rive paper, that all fail. A Lunatic.—The Rive paper, highly albumenized, is sometimes very liable to blisters, especially when the toning and fixing solutions are decidedly alkaline. In order to get black and white tones you must use intense negatives, and print deeply. Any toning process will then give you black tones. The only means of preventing the prints becoming too much bleached in the fixing solution, is deep printing and toning, so as to allow for the inevitable bleaching. S. D.—Your nitrate bath is surcharged with iodo-nitrate of silver. Dilute it with an equal bath of water, which will cause a precipitate ; filter, and add sufficient silver to make up the proper strength. SAMBO.—With some samples of paper it is impossible to prevent very con siderable reddening in the hypo bath, and in such case a change of paper Is the only remedy. But it sometimes happens that when the toning is conducted very rapidly a deceptive black colour is obtained which rapidly disappears in the fixing bath. Use the acetate bath, tone a little deeper, and, if necessary, change the paper. Pyro.—The stains on your pictures appear to arise from the developing solu tion running back from the edges of the plate in greasy streaks. The camera used cannot have any influence in the matter so as we can see, unless the plate rests on an edge all round, instead of at the corners only, which might affect the matter. You had better practise a little longer before seeking an engagement as operator. W. II. II.—The black deposit thrown down is metallic gold. We have never had such a deposit with the acetate bath ; try using less of the acetate, or another sample. T. A.—We presume Mr. Glaisher’s opinion as the nature of light is that universally held at the present day, known as the Undulatory Theory, and of which the Astronomer Royal, in his tract on the subject, says it is " cer tainly true,” and possesses “the same claims to attention as the ‘ Theory of Gravitation.’ ” This theory supposes that the sun, as a luminous body, com municates an undulatory motion to an elastic ether which pervades space, and that the different coloured rays are due to the length of the waves or undulations ; the red ray having the longest waves and the smallest number in a given space of time ; and the blue ray the shortest waves and greatest number in a given space of time. As this is a well proved theory, con firmed by its explaining a number of incidental phenomena, and is uni versally accepted, we have no doubt that it is the view held by Mr. Glaisher. Should this not be the case, we have no doubt that he will inform you, on application. You must bear in mind that a subject which has been care fully investigated by the ablest men of the day, with the best possible facilities for its examination will not be lightly set aside. We cannot of course offer any opinion upon your ideas as briefly indicated in your note. Islington.—The simplest mode of giving a dead black surface to paper is to brush it with a mixture of lamp-black and size. For rapid drying, a mix ture of lamp-black with very little white lead, and turpentine will answer. 2. Wherever the word “part” is used it may mean grains, drachms, ounces, or any other quantities at the choice of the operator. It is the simplest pos sible manner of stating a formula, adapting itself to the commonest intel ligence. Thus, the formula you quote, “ 100 parts of sulphate of iron in 500 parts of water” may be 100 grains, or drachms, or ounces, in 500 grains or drachms or ounces of water ; if grains be selected the proportion will be at the rate of one in five, or, say 12 grains in a drachm of water. The only thing to be remembered is to use the same “part” throughout, by weight in solids, and measure in liquids, unless “parts by weight” are specially stated, in which case you must weigh. Where the term per cent, is used it is equally simple : a solution of 5 percent, contains 5 parts in a hundred of water. Thus a silver bath of 5 per cent, contains 24 grains to the ounce, being 5 multiplied by 4 8-10ths. Where French formulae are stated accord ing to their decimal system of weights and measures, it is difficult to state them exactly in English figures without troublesome fractions, but where stated in “parts” and “per centages” the matter is very simple, and and merely requires the exercise of a little intelligence to understand them. R. T. L.—Judging from the print received you have too little direct light and too much diffused light; but the negative appears to have been much over-exposed and under-intensified. So far as you state, your chemical conditions arc all right, but the print is very poor, and it seems di:cult to say with certainty the source of the error. Try with a much larger stop, and short exposure. If you send us a further example state exact time of exposure. Sol.—Hollingworth’s paper may be used with resin ; but the Rive paper gives the best results for the purpose. You may purchase the solution ready prepared, or you can get the materials, as described in our pages, of any chemist. It is quite possible to get pure whites with resinized paper. W. D.—The value of negatives, and the facility of disposing of them, will depend entirely upon the subjects. If the subjects are popular, the nega tives, or prints, from them will, doubtless, sell. F. L.—We only know three causes for the defects of which you complain, viz., dirty plates, a bath too acid, or defective collodion. There are other minor causes which will tend to the same defect, but these arc the chief causes. When the tendency exists, short exposure and over-pushing of development will increase the tendency. We fear, in this case, the collo dion is the cause. No. 174 containing index to Vol. v. is, unfortunately, out of print. T. G. sends a piece of glass flashed with silver, and having the peculiar mottled appearance characteristic of the best adiactinic qualities, has been sent for spectroscopic examination. It is seen to cut off in a very perfect manner all the chemically acting rays, and will answer very well for glazing the windows of a dark room. Constant Subscriber.—For camera printing of transparencies, the lenses should be placed upon a sliding front, so as to admit of a lateral motion, separating them more or less, as needed. This plan has many advantages, and permits a slight enlargement or reduction of the copy, which is often desirable. The distance between the two images on the transparency should be about 24 inches from centre to centre. You may use the lenses to which you refer, for producing the transparencies. F. G. Wiiaite.—We handed the five shillings to Dr. Diamond, for your share in Meagher’s camera. Several Correspondents in our next. 1hotograp5s Registere during thje Past «dAeckt. Mr. Josiah Groom, Wyle Cop, Shrewsbury, Photograph of Lord Hill Hawkstone. Mr. A. S. Watson, 2, Regent Road, Great Yarmouth, Two Photographs of Percy Rosell, The Infant Wonder, Photographs of the Officers of the East Norfolk Militia. Messrs. W. and D. Downey, 9, Eldon Square, Newcastle-on-Tyne, Photograph of Newcastle from Gateshead, Two Photographs of Rev. James Pringle. Mr. Thomas Gulliver, 18, Union Street, Swansea, Photograph of Rev. Latimer Maurice Jones.
- Aktuelle Seite (TXT)
- METS Datei (XML)
- IIIF Manifest (JSON)