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The photographic news
- Bandzählung
- 35.1891
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- 1891
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- Hochschule für Grafik und Buchkunst Leipzig
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- Bandzählung
- No. 1699, March 27, 1891
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The photographic news
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254 Qroceedings of Societies. The Photographic Society of Great Britain. At the technical meeting of this Society held on the 24th inst., the chair was taken by Mr. W. Bedford. Two volumes of Excursions Daguerrennes, published in the years 1841 and 1842, and containing engravings drawn from Daguerreotype pictures, were shown by Messrs. G. Houghton and Sons, together with a catalogue of Daguerreotype goods issued by their firm in 1841. Mr. Chapman Jones introduced “ Hand-Cameras ”—the subject of the evening—by describing the Memorandum Camera, an apparatus made for plates of 34 by 2 ; that being a size which would give an oblong picture in the circle of a lantern plate. He always used a finder, and preferred to have a loose one, so that it could be applied to the top of the camera, whether it was placed in a vertical or a horizontal position. Mr. Leon Warnerke showed several hand-cameras. The first was one which had been made some time since for him in Moscow. A mirror between the lens and plate served as a finder. He also showed a French camera made of metal and very light. The front of the camera was of hemispherical form, and in this hemisphere the shutter partly revolved. The dark slides were exceedingly well made. He also showed a German made camera furnished with roller slide for paper or films. The end of one of the spools was continued to the outside, where it bore a brass plate having spiral convolutions. An indicator worked in these convolutions, which were so arranged that, whether the spool was full or nearly empty, the same length of film would be wound off. Mr. Biden thought it would be desirable to know the price of the camera. Mr. Warnerke replied that it was very cheap considering its effectiveness, about thirty or thirty-five shillings of our money. Messrs. Mawson and Swan showed a “ Reflex Camera.” The chief novelty was stated to be the mirror, which, set between the lens and plate, reflected an image on to a ground glass on the top, and served for focussing and finding. “ Kodaks ” of various sizes were sent by the Eastman Com pany, furnished with lenses of foci ranging from 2,% up to 8} inches. Messrs. Houghton & Sons showed the “ Automatic Hand- Camera.” The apparatus was furnished with a Thornton- Pickard shutter and the usual finders. A novelty was the way in which the plate was brought from the store chamber in the back of the camera under the middle to the front, by way of a shallow well, so that that the depth of the camera was only increased by about three-quarters of an inch. This was spoken about by the chairman and Mr. W. E. Debenham. Messrs. Robinson & Sons showed photographs taken by the “ Luzo Camera ” of various sizes, and explained the working of the instrument. Messrs. Griffiths & Sons showed a “Dines’ Camera,” in which there was a changing box for a dozen plates at the back, and an arrangement by which these plates could be brought out, one at a time, from any particular groove that might be desired, so that plates of different sensitiveness could be used if required. The changing box at the back could be removed, and replaced by another in full light. The Zodiac camera was exhibited by Messrs. Griffiths. Mr. E. W. Parfitt showed the Quadrant camera, the com bined invention of Mr. Hume and himself. Each plate was contained in a sheath, and the object of the construction was to diminish bulk as much as possible. Messrs. Marion exhibited the Radial camera. This was another contrivance for drawing plates from a store at the back —arranged in radiating grooves—to their position at the focus of the lens. The grooves were made of metal electrically deposited, and the plates worked very smoothly in them. Messrs. Adams showed two cameras, the Ideal and the Adams. It was especially pointed out that there were no pro jecting knobs. A hand-camera called the «e Photographic Repeater ” was shown by Mr. Cusworth. Each plate was attached to a thin piece of wood by a rubber band stretched over either end. Messrs. Parker and Co. showed their “Companion Camera.” They claimed for this instrument great simplicity in the manner of shitting the plates. Mr. Shew showed a camera which, although for whole-plate, could be worked in the hand. The novelty which had been introduced into it since last shown was the method of focussing. There was a jacket attached to the front board, into which any lens might be screwed. Springing from the side of this jacket, and lying on the front board, was an arm which, by moving round, brought the lens nearer to or farther from the plate. A scale on the board might be marked, to correspond to the various distances at which objects would be in focus. Mr. Samuel spoke of the various characteristics and require ments of hand-cameras. He held particularly that—as had been pointed out by Mr. Debenham—there should be a means of raising the lens in both positions, and showed how this was accomplished by the (J-piece which he adopted. Mr. Warnerke mentioned the experiments of Professor Lippmann, and said that up to the present he had not suc ceeded in getting like results, but he had some results which he showed. He had noticed strong iridescent colours in plates made by the dusting-on process with graphite. By rubbing graphite on to glass or ebonite and coating with collodion, he could produce these colours at will. He had prepared a colour screen with strips of glass of various colours, and found that a piece of albumen paper exposed under this screen, and floating on mercury with the albumen side downwards, took colours corresponding, though not so bright, with the colours of the screen. With glass coated with sensitised albumen, however, only darkening took place, and no specific colour ation. Mr. Debenham said that this experiment, in which the colour showed quite through the thickness of the albumen paper, and was the same by reflection as transmission, seemed to be rather following Becquerel than Lippmann. Votes of thanks to those who had sent objects for con sideration, closed the meeting, which was kept up to an unusually late hour. The Camera Club. The Camera Club commenced photographic meetings in the large room of its new premises on Monday, March 16th, with a lantern exhibition. Sir George R. Prescott presided, and opened the proceedings with a few remarks on the state of the premises and the progress of the Club. About seventy mem bers were present. A large number of slides was passed through the lantern ; the pictures were the work of Messrs. Wellington, Cembrano, Stevens, Sands, Barton, and Chang. On Thursday, March 19th, a paper on “English Church Architecture” was read by Rev. T. Perkins, M.A. ; Major J. Fortune Nott occupied the chair. The Hon. Sec. drew attention to a notice from the Meteoro logical Society, and handed round a trimming board, devised specially to ensure certainty in securing parallelism of the horizon with the top and bottom edge of the print trimmed. Mr. Perkins began by apologising for any shortcomings in his paper, and gave as one reason that he had had to take part with one other person in a ceremony in an ecclesiastical building of modern date. In photographing the interiors of churches, he said, it is astonishing how people can walk about in the field of view without affecting images due to long exposures. On one occasion, however, the head and no body of a friend of his appeared in a photograph, due, he thought probable, to a gleam of sunlight falling on his face for a moment. As some interest had been expressed after his last lecture about the few remains of churches built before the Norman conquest, he had since been photographing some of them, especially in Northampton shire, which is rich in Saxon remains ; in fact, the geographical distribution of churches in these islands is not without interest, because of the light it throws upon the history of this country He preferred the word “Danish” to “Saxon,” He then
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