Portrait . Ingento Enlarging Lantern advantage of this form of arc is that the rays of lightemanate from one point, whereas with the ordinaryform of arc lamp the light travels around the carbonin a circle, and while producing a brilliant light duringpart of the exposure, yet the brilliancy decreases asthe flame works around to the rear of the carbon,making it difficult to gauge the proper exposure. Ground-glass is used between condensers to cut outscratches and retouching marks, and although expos-ures are lengthened with the illumination used in thiscase, and recommended to our readers, the f
Portrait . Ingento Enlarging Lantern advantage of this form of arc is that the rays of lightemanate from one point, whereas with the ordinaryform of arc lamp the light travels around the carbonin a circle, and while producing a brilliant light duringpart of the exposure, yet the brilliancy decreases asthe flame works around to the rear of the carbon,making it difficult to gauge the proper exposure. Ground-glass is used between condensers to cut outscratches and retouching marks, and although expos-ures are lengthened with the illumination used in thiscase, and recommended to our readers, the few secondsadded are hardly noticeable. The exposures were onSoft Cyko (ten seconds) and on Professional grade(fifty seconds). r a i t Negatives The proper negative for enlarging should be wellbalanced and not too dense. Negatives that willproduce good contact prints without doctoring willproduce enlargements on Cyko equally as goodwithout 90° Hand Feed Arc Lamp Lenses In the selection of a lens for enlarging, photog-raphers should consider the value of their portraitlens in the making of negatives as against rectilinearor symmetrical lenses, also the focal length must beconsidered, and preferably a lens of from ten to twelveinch focus should be used. This lens, from a cabinetnegative, will reproduce by enlargement far betterprints than are made by the average photographer fromdirect negatives, as there are so many conditionsthrough which he is handicapped in the making oflarge negatives. He may not have the lens, his light 6 r a
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Keywords: ., bookauth, bookcentury1900, bookdecade1900, booksubjectphotography