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New Color Photography Process PerfectedTwo Young Inventors Make Pictures in Natural Hues and Take as Many Prints as They Desire from One ExposureHERE is a new process of color far developed, he set himself the task ofphotography which makes removing them and of expanding thethe reproduction of the hues field of photographic reprcluction invincing array of many-hued photographs of his student friends and scenes of Cambridge. But he did these things in spite of the limitations and handicapsof nature, of the human fare, .color, and he pictured forth, an inventors of the ordinarJ. camera. and he kept onand of the fabrics of gowns do, the possibilities and fruits of an ad- doing them for his own amusement, butas simple and sure as the vance in the art that woub 3*'able the under the same handicap, in the eightblacks and whites of the old camera,Unlike other color methods, it will put the picture in natural hues on any material, and as many prints as are desired may be made from one exposure. InDiagram of the Camera. —Lens. B—Shutter.Rubber tubing in bulb, short, the discovery is to color photog- D—Bellows. E—Focusingraphy what the Wright biplane was to mechanism.Light-aviation or Marconi’s coherer to wireless m|fror* ^ ^reentelegraphy.To understand the full significanceimportantgraphicfilter. H—Green, or direct,Red filter.reflected,Direct light rays forming a single cone projected. f by the lens. L—Reflectedfact that the processes of photography *Percy D. Brewster.rays from the same conebein color with which the public is more or less familiar up to the present time do not lend themselves to practical everyday use in the studio or by the amateur.Either the process of printing is very ■low, cumbersome, and costly, or else it is iplicable only on a very limited scale.But with this new camera and by the color process used in connection with it pictures of fabrics and flowers, of trees in leaf and fields abloom, of birds and animals, and, above all, of men, women,and children, may be taken with no more trouble than goes to the making of a black and white photograph, and from the negative when developed may printed as many copies as are desired.It can already lie foreseen that one notable use of the new process will be in reproducing oil paintings, old masters, and modern canvases, in their original colors, replacing the present costly method by lithography. Every villagephotographer, too, and every amateur camera to repeat in coior the easy and years following graduation that he de- vantage of in the design of the colormay have the resources of color photog- ^ triumphs of black and white voted to his work as a color chemist camera-to break each one of these cones* assureu inumpua u* l it a a#-*.- b. r« of light into twenty or more parts, thatraphy at his command with his own wor^ jje resolved to equip himself for_ — as • * « Vthe solution of the problem.Accordingly, he began diligently toin the service of H. A. Metz Co.cameraThe whole art and mystery of the new is, have the cone strike possibly ten holesdeveloped and printed as is now generallycolorare described in detailprocessreither by Ilrewster nor by Miller.beamsEvi-formdone.getcame aboutstudy the nature and behavior of light, dently each one has something up theportionsago Percy D. Brewsterengineeringlenses, of platestimeHe dye-stained sleeve of his working clothes cone that strike the solid parts of theover in the Newark laboratory or of his mirror are reflected and form the researchafternoon coat in the Brewster studios fleeted imagen’ “ -------------- - sea rev worn, * ----- in the Knox I5uilCornell University. Graduating in pfcyguists, E. J. Wall of Syracuse and and pjfth Avenue.the Knox Building, Fortieth Street141905 and applying his engineering knowl- charkss S. Hastings of Yale. His task In explaining the construction of the. m . m _ *.. . a • • a * IIedge to the practical needs of life, he began early to exhibit a gift for inven-light fro been traath of only one point image photographed 1 n its source as a pointsurmount r barred t____________illustrated* Mr. Brewster said:baselens and its reconversion to a point at, , • * • and general umj ui tviui *«» |v»m»v»••• — -—----------- —tion, devising improvements in existing ^ ^ ^ produce a camera that matically, consists of the camera box membered that a countlessmechanisms and inventing new ones, ^ ^ picture in coior that could arranged to hold two plates at right light rays are received by the lens in...... y material and indefi- angles to each other. It is provided making any picture, and that probablyBv tireless labor and with a lens and shutter of the ordinary millions of rays pass through each of theThe camera, as illustrated diagram- the surface of the plate, it must be renumber ofparticularly in the automobile industry.printedp rocesshis observation. Theyhimdeeply.Theyitset him thinking.”nitely reproducedmany experiments he approached hisideal, he did produce such a camera.Mr. Brewster had now reached thepoint where it becameImagination is an essential quality of the piement his command of the light ray by inventor’s mind, and Mr. Brewster’s an equal command of color and chem-iraagination was at work.type mounted on !oard for focusing, as in the ordinary camera. The great difference is that the camera is provided with a nickel or silvered mirror between the lens andthe movable front holes in the 4 Swiss cheese ’ mirror toftSeeing the istry. Thenform the imageIt should be explained here that all ordinary photographic plates are color blindto everything except blue and violet.the plate, protected from oxidation, They are made color sensitive by treat-ground and polished to an optical flat ing them with rare dyes, such as pina-iimitationgraduateby the telescope maker, the Brashear cyanolhappened to be an experienced color Company of Pittsburgh, and containingchemiat intimately familiar with the about one hundred holes. For that^ ~ M . m A , m 1 ft ft a. _partspart dye to about water. The firstvast variety of dyestuffs and colors, tints, and shades used in the dyeing industry, and an expert as well in the chemistry ofphotography—a combination of talentsvery unusual, but just the thing for the furtherance of Brewster’s aims.Swiss cheeseseeThese holes, as shown pass through the of 45 degrees. It iplate at an angle essential that anyorange; the other, green and A green filter is interposeddirectpass through ate should nof the recordBrewsterspecializedteredchemistryand long before he had his degree do things with his dyes and^hishe holes are coun about 40 degreesgreen light on that plate, and a red filter is interposed in front by the plate acted on by the reflected rays plate, so as to record simultaneously the same object44As everybody knows, light radiates 0n the two plates. The exposure in thephotographic plates that his Cambridge from every point in the object to be studio is from two to eight seconds,piece of the ” Swiss cheese ” mirror.showing hole lines indicate reverse side.side; dotted holes on theclassmates recall today as something uncanny. His college room was a wizard’s den, filled with retorts and all the other mysterious paraphernalia of che with jars of liquid dyes of every a place that the professors as well students in physics liked to visit.His thesis on color photograp the physics course was based on the things he had done, not on what he had road, and II was backed up by a con-photographed into the cameraprojected by the lens in the formuponthe diaphragm point apexexposures ftieth of a second can be used.Owing to their sensitiveness to red ;ht, the plates are developed in totalIf half of darkness, and two platesthese light rays are cut off, the remain- white, one the red record and the otherwill form just as perfect an image the green record, are securedTheyof the point photographed, though, of course, with only half of the light intensity, thereby necessitating doublingthe exposure. This fact is taken ad-exact lyister exactly the same size, differing from each other only in that a red object in the picture is recorded with greater
Newspaper Details
New York Times
New York, New York, US
Sun, Mar 26, 1916
Page 70
Full Page
Clipped by
Nick N.
IL, USA 30 Apr 2022
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