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The photographic news
- Bandzählung
- 6.1862
- Erscheinungsdatum
- 1862
- 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
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- urn:nbn:de:bsz:14-db-id1780948042-186200003
- PURL
- http://digital.slub-dresden.de/id1780948042-18620000
- OAI
- oai:de:slub-dresden:db:id-1780948042-18620000
- Sammlungen
- Fotografie
- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
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- Seite 1-72 fehlen in der Vorlage. Vorlagebedingter Textverlust.
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- Parlamentsperiode
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- Wahlperiode
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- Bandzählung
- No. 198, June 20, 1862
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Ausgabe
- Parlamentsperiode
- -
- Wahlperiode
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Zeitschrift
The photographic news
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Band
Band 6.1862
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- Ausgabe Ausgabe 73
- Ausgabe Ausgabe 85
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- Register Index 619
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Band
Band 6.1862
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- Titel
- The photographic news
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[June 20,180- THE PHOTOGRAPHIC NEWS. 292 of visitors to two the room, but which are, nevertheless, very likely to be passed over by many entirely unnoticed. They consist of two thin quarto albums, laid upon a table in a corner of the room, opposite the visitor, and at his right hand in entering. They are numbered 906, and 907, and are contributed by Mr. It. Harmer, in whose name we have pleasure in recog nizing a member of the South London Committee. The first album contains specimens of photography as it may be applied to book illustration; but it is chiefly interesting to the photographer for the examples it contains of effective fancy printing. The especial object is to show that a proper iodized the same quantity of iodide with the addition of some bromide. A point of very great importance in attaining the maxi mum sensibility, either in iodized or bromo-iodized collo dion, is the proportion between the quantity of pyroxyline and the quantity of silver deposited in the film, whether as iodide or bromide, and to make experiments comparable this proportion should be constant, so that when bromide is added to a collodion the iodide should be proportionally diminished. If too little silver be precipitated in the film the particles of iodide or bromide are so surrounded by pyroxyline as to lose much of their sensibility, if too much silver be present the precipitated salts hang loose in the film, and are apt to wash out and cause patches. The result of a number of experiments has led me to the conclusion that 6 grains of good pyroxyline will bear satisfactorily suf ficient iodide, or mixed bromide and iodide, to combine with 2’5 grains of silver. In all the experiments which I have at various times made on the best proportions of the two salts, this point has been carefully attended to, a result always in favour of the proportion of bromide and iodide before mentioned, the bath and developer being always the same. I believe much of the discrepancy in the results obtained by different experimenters, is to be traced to a want of attention to such points as the above, which would go far to reconcile apparently contradictory results, which, as has been well remarked, “ contradictory as they seem, are all true, but are truths imperfectly understood.” Middlesex Hospital, June 11th, 1862. injured. Others remain as witnesses of the destructive action going forward. What will be the state of some before October, we will not at present contemplate. We commence our present notice by calling the attention .? .Lit t 1.3 of the most interesting contributions in Uhe Enternationul G*hibition. THE BRITISH PHOTOGRAPHIC DEPARTMENT. Tub Jurors have now completed their labours, and rendered their reports. At what period those reports will be pub lished, we are unable to state ; it is indeed undecided as yet by the Commissioners themselves. As one of the primary clauses of “Instructions to Jurors” is an injunction to secrecy in regard to their discussions and awards, informa tion of a definite character cannot at present reach the public; the traditional “ little bird,” however, which has from time immemorial prated of secrets, has whispered suffi cient to make us hope that the adjudication will be on the whole satisfactory, that nearly a hundred exhibitors will be made happy by the receipt of bronze medals, and consi derably more than that number will be distinguished by “ honourable mention." For details, however, expectants must wait for Time, the revealer. The irregular arrangement and hanging preclude any satisfactory consecutive notice of the pictures, whether in relation to the numbers, subjects, or artists, we shall there fore pursue such order as we can in glancing at the most noticeable contributions. We may mention here that we are glad to perceive that our intimation as to the effect of the damp walls has induced some contributors of pictures tinted in water colours, to remove those which had been margin of white paper may be secured round a printrf* shape, without the necessity of mounting. Here, each * quarto sheet of paper, are prints of all shapes, oval, 8!02 &c., with a pure white margin of the photographic Perhaps the most effective specimens are those in whid” appearance of an India paper tint is produced around print, and beyond the tint white margin, giving three ’ tinct tints—that of the photographic background, the" paper, and that of the white margin, but all produced/ one piece of paper by skilful masking whilst print 1 * Another style of printing not less pleasing illustrates • effect of apparently vignetting on tinted paper: the i: graduates into a pale warm grey or drab, instead of i background of white, the whites in the image itself" ever, being kept quite pure ; whilst around the paleE into which the vignetting is merged, is a margin of" This style has somewhat the effect of a crayon draw', tinted paper, with the high lights put in with whiteC but is infinitely superior to anything of the kind >• delicacy and force. Other vignettes are printed entire a tinted ground, the paper apparently having recetd little general exposure before or after printing the neg This method, which would apparently be so destr of anything like pure or vigorous prints, becomes, effective in certain cases ; for instance, here is a head " a negative which is manifestly hard and over-intense; . ordinary printing it would be chalky in the extreme’s here there are no high lights, the vigour is subdueda empty patches of white without detail cease to be ofiea as the whole has simply the sketchy suggestiveness, chalk drawing. Many of the photographs are inW selves very excellent, but under the treatment they bana ceived in printing they become some of the most cbar photographic pictures we have seen. Altogether this® is a most instructive contribution, full of suggestion D printer ambitious to excel in securing the most II a effects of which his negative is capable; and we lai commend every photographer who visits the Exhibi" i spend a quarter of an hour examining this albutto must not omit to add that the prints are on papet .J menized on both sides, a method proposed in our coluta Mr. Harmer some time ago, as both improving the Gr of the prints, and for book illustration giving unifor ( appearance to the paper in prints not intended mounted. | I Mr. Harmer’s other album contains half-a-dozen c photographs, by a method which has been more tha suggested; but not before, to our knowledge, tried | photographs are printed on papers prepared W graduated tints produced by lithography, for pencil 0 drawings. Most of our readers are doubtless familla these prepared papers, which are usually sold at rePP for drawing materials, and possess tints graduated for. effects; generally commencing, however, with warn? for the foreground, running into sunset tints of yed red, and these again into the blues. It is upon th ot that Mr. Harmer has contrived by careful printing duce half-a-dozen landscapes. We understand^ special treatment was adopted ; the ordinary ProCad.r sensitizing, fixing, and washing, having been ddd great care exercised throughout. The result is d. successful: a new field for the judicious exercisesoyi printing is here not merely suggested, but practicyd trated ; and Mr. Harmer, we conceive, deserves we jo photographic brethren for these very pleasing ana tive contributions. . pi j. There are scarcely so many subject pieces or genThdd as might have been anticipated; probably fromituei”. tainty in which photographers were kept astotnei ope position in the Exhibition. This cause _we knon in a detrimental manner upon the contributions i ways, giving little time and less heart for the PriBut," of especial pictures. Foremost amongst the con 1 this class are the two names, often mentioned co J J Rejl fram we h been too 1 ceive have the < Thes farer ofM fully visit self this phot Mi earlie genii Love, of tl exhil sitior despi admi grapl mg i ing. If pl much unqu some doub exam as ar Galle may pictu “Ela at th short have skete of SOI as a ] ture, tingl Lond »rite, ing a Sec “epic "ith lede leftb follow again to be shiel flat a bosse Weill W histo troul Us t Robi admi to re or tl upon and, pert;
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