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EX CATHEDRA: Ghost Images or Flare, Camera Copies and The Shop Window. 2008-05-21 00:00:59 Ghost Images
or Flare
It is a known fact that many of the finest pre-war anastigmats frequently give both ghost images and flare when dealing with subjects which throw a strong light into their glasses. The defect is much lees often met when single lenses or the single components of convertible auastigtmats or R.R. instruments are employed. "Ghost images" or "flare'' are regarded by many photograph Read more:Ghost
, Camera
, Window
Photography's War Work 2008-05-20 11:49:04 [The immense part played by aerial photography in the prosecution of the war is naturally realized by photographers, a very large number of whom have been practically engaged in carrying it on. But perhaps the magnitude of the scale is not a matter of common knowledge, and therefore we embrace the opportunity of reprinting from the "Daily Telegraph" of Monday last an article which presumably embod
Practicus In The Studio: Backgrounds 2008-05-20 10:39:59 The modern photographer regards the background of a picture in a very different light from his predecessor of twenty, or even ten, years ago. Then it was the custom to use elaborately painted scenes, which were supposed to be more or lees suited to the social standing of the sitter. Usually they were highly incongruous, and we often found such combinations as a butcher-boy in a tropical conservato Read more:Backgrounds
DARK-SLIDES OUT OF REGISTER 2008-05-25 11:57:20 DARK-SLIDES OUT OF REGISTER.In three out of four studios that I have visited in the course of the last year or so, I found the dark slides of the camera in general use out of register with the focusing screen. The present use of rapid plates enables the photographer to use diaphragms to an extent that disguises considerably the want of fine definition, resulting from the plate not being truly in f
Practicus In The Studio: Studio Exposures. 2008-05-26 12:47:45 Correct exposure is one of the most important of the factors in making perfect photographs, yet the majority of portra approach it in the most casual manner, and apparently trust to a sort of sixth sense to tell them how long to keep the shutter open, or as one Mid to me, "It is like taking a dire into water; when I press the bulb, I do not know when I am coming to the surface.” With long practi
A NEW YELLOW DYE AND LIGHT-FILTERS MADE FROM IT. 2008-05-26 12:26:10 In the early days of orthochromatic photography the dye generally used for the preparation of light filters was picric acid, this having the advantage of simplicity and cheapness and of great efficiency, picric acid absorbing the ultra-violet almost completely, and having a wry sharp cut in the spectrum. The disadvantage of picric acid, however, is that it is unstable to light, filters made with i
Some Notes On Print-Meters 2008-06-03 11:01:55 Of the many forms of print-meters, or actinometers, the type dependent upon miniature negatives of graduated density is preferred by some, as no matching of tint is required, and for occasional work with only a few frames exposed it certainly is convenient. On the other hand, the most accurate of all probably is the "single-tint" tint-matching type, almost essential when many frames have Read more:Notes
, Print
The Gum Bichromate Process With A New Colloid. 2008-06-03 10:56:27 [The following is the extended account, as published in the Journal of the Royal Photographic Society, of the experiments made by H. S. Starnes and the subject of the paper read by him some time ago before the Society, Mr. Starnes, it will be seen, employs, instead of gum arabic, gum Senegal and prepares this latter gum upon the paper in an acid condition. In this respect the process bears some re Read more:Process
Economy of Chemical 2008-06-03 15:20:27 When we compare the present prices of nearly all chemicals with those ruling before the war we find that the increase in the year's expenditure in this direction is a serious matter, and as it is a matter of percentages as serious for the small user as for the large one, whether the expenditure be five pounds or five hundred, it is import
EX CATHEDRA: Stamps and Box Nos, Iodine-Cyanide, "Close Up" Pictures, Print Washing. 2008-06-03 14:18:39 Stamps and Box Nos. What is alleged by a correspondent to be a grievance amongst assistants who apply for situations advertised over a box number is the non- reply to such applications when a stamped and addressed envelope is enclosed for the purpose. It has been suggested more than once that the publishers of the “B.J.” should devise Read more:Stamps
, Iodine
, Close
, Pictures
, Print
Practicus In The Studio: Printing Processes For Portraiture. 2008-06-05 12:17:59 I find that nowadays people are rather apt to get into a groove over their printing methods and apparently forget that any other process exists except that which they happen to be working. It thus occurs to me that a brief review of the Different printing media at present available, with notes on the characteristics of each, would be of s Read more:Printing
Appearances. 2008-06-05 09:51:43 Some people say that "appearances are deceptive," and others that " the first impression is everything." Although these dicta are apparently contradictory, there is truth in both, and our resent object is to point out how outward appearances react on the success of a photographic business.In photography more than in most businesses the im Read more:Appearances
Practicus In the Studio: Artificial Lighting. 2008-06-04 20:55:56 It seems only a few years ago that a photograph taken by artificial light was somewhat of a curiosity and, with one or two brilliant exceptions, photographers were apt to regard it as a poor substitute for daylight, and, to tell the truth, the work generally produced quite justified their opinion. That I need hardly say was a time when el Read more:Artificial
, Lighting
Assistants' Notes - 1 2008-06-09 15:02:47 Books on Colour. Assistants
who mean to make photography their profession should look into the question of colour, as pictorial art of the future will be intimately concerned in the study; some authorities-particularly those connected with the vast textile industry declare the future is bound up with it. Students of painting are bidden to Read more:Notes
EX CATHEDRA: Low-Priced Trade Work; A Lecture on Photography; Focussing Sharply; Patent Specifications. 2008-06-08 16:18:53 Low-Priced Trade
Work. In a business such as photography, in which the goods sold to the public exhibit so wide a range of quality, it is, of course, natural to find a similar range of quality in the work done by trade firms for photographers. In both cases the quality is more or less accurately reflected in the price which is charged. A c Read more:Patent
The Education Of Assistants. 2008-06-10 15:39:26 Our title has nothing original about it, it has figured pretty frequently in the "Journal" lately, but as the question seems in rather a nebulous state, it is perhaps in order to inquire what it really means. In other trades it is not usual to employ the wide and comprehensive term assistant, but to specify the branch in which the employe Read more:Education
, Assistants
Practicus In The Studio: A Talk About Lighting. 2008-06-10 15:06:24 Lighting
the sitter is one of the most difficult subject to discourse upon that could well be chosen, for so narrow is the margin between success and failure that it u not possible to give definite rules which will ensure the same results under different conditions; in fact, so far m this true that there is a legend that one su
Lenses Fob Odd Jobs. 2008-06-10 13:56:58 Most professional photographers would be surprised if they were told that in the matter of lens equipment they were far behind many enthusiastic amateurs, but we believe that we are correct in making this assertion. The fact is, that the professional is rather apt to put all his eggs into one basket, or, in other words, to invest in a few
Buying Equipment 2008-06-12 00:28:19 STARTING a photographic business resembles in many respects setting up housekeeping; that is to say, there is a natural tendency to spend an undue proportion of the sum allotted for the purpose on certain big items and to stint on less showy but more essential details in other words to purchase suite- and decorations for the reception and Read more:Buying
, Equipment
Assistants' notes: Celluloid Facing; Photography with the Royal Engineers; Ply Wood 2008-06-11 13:11:36 Celluloid Facing
. PHOTOGRAPHIC miniatures, which are so popular with the working-classes, are easily made; the important factor is the time taken up. By means of the card repeating back four pictures are made on a quarter-plate. Sometimes the original requires the background painted out with Chinese white, or a few touches put in with lamp Read more:Assistants
, Royal
, Engineers
Practicus In The Studio: The Camera and Lens. 2008-06-12 21:28:55 The selection of the studio camera and lens, or rather lenses, for it is a serious handicap to have to work with one only, deserves the most careful consideration, and in comparison with other items a liberal allotment should be made when planning your outlay. A badly made camera or an inferior lens will soon cause the loss of more money Read more:Camera
The Value Of Expression In Portraiture. 2008-06-14 00:29:34 A matter to which many portrait photographers do not give the consideration that it merits, is the expression of the sitter's countenance at the moment of the exposure. In my experience and observation the one thing more, perhaps, than any other single quality, which secures approval or disapproval of a portrait, is the sitter's expressio Read more:Value
Assistants' Notes: A Camera Repair-Outfit; The Tyro's First Camera. 2008-06-16 13:43:36 A CameraRepair
-Outfit
. ONLY one photographer have I ever met who habitually carried a repair-outfit when going on outdoor jobs, and his practice consisted principally in twelve by ten and whole-plate work at a distance front his headquarters. It is an idea that is well worth following, because, although the occasion for its use may never Read more:Assistants
, Notes
, First
Photographic Materials and Processes 2008-06-18 05:24:27 [We are glad of the opportunity of publishing the second of the annual reports on progress in photographic manufacture which has been issued by the Society of Chemical Industry. The author is again Mr. B. V. Storr, M.Sc., of the. Ilford Company, to whom students of the technical and scientific side of photography will feel indebted for his analysis of what has been published and accomplished durin Read more:Photographic
, Materials
Fog In The Studio. 2008-06-22 13:33:16 IN many localities, notably in the London district, the state of the atmosphere has left much to be desired from the photographer's point of view. Not only has there been an actual deficiency of light through the presence of more or less yellow fogs, but there has been great difficulty in securing brilliant negatives on days when the ligh
Practicus In The Studio: Studio Accessories and Furniture. 2008-06-20 08:58:45 In no respect does the modern style of studio differ more From its predecessors than in the matter of accessories, and we might treat the former in the same way as did the writer of a book on Iceland. A chapter was headed "Snakes in Iceland," and the chapter consisted merely of the words, “There are no snakes in Iceland." &nb Read more:Furniture
, Accessories
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