. The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing. ttleinto a smaller, tjius leaving all impurities of former manip-ulations behind; by using the collodion immediately after 460 failures; their origin and remedies. iodizing; or from not wiping, with sufficient care, the necksof the bottles from dried fragments of collodion or dust, orFig. 7 from any flue, etc., off the glass- cloths, adhering to the surface ofthe plate. When they are in thecollodion itself they may be knownby the tail-like appendages, etc.,taking a curved form of direction,as
. The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing. ttleinto a smaller, tjius leaving all impurities of former manip-ulations behind; by using the collodion immediately after 460 failures; their origin and remedies. iodizing; or from not wiping, with sufficient care, the necksof the bottles from dried fragments of collodion or dust, orFig. 7 from any flue, etc., off the glass- cloths, adhering to the surface ofthe plate. When they are in thecollodion itself they may be knownby the tail-like appendages, etc.,taking a curved form of direction,as in fig. 7, consequent upon therotary motion imparted to theliquid in laying the film; whereasthose dependent on the action ofsubstances merely resting on the surface of the film, havedirect vertical lines of drainage action. Straight lines, of varied intensity, crossing the plate fromside to side, are caused by any pause of hesitating move-ment with which the dipping of the film into the nitratebath may have been accompanied. As has been mentionedthe action should be firm, prompt and Stains. Marks often appear like small beards of light followingthe forms of the high lights of the subject, and streaming Fig. 8. downward from them in the di-rection in which the film stoodwhen exposed in the camera, asshown in fig. 8. This defect iscaused by the plate not havingbeen sufficiently drained before ex-\ posure; the action is caused thus:The rays of light which delineatedthe fingers, linen, etc., in the im-age, were diverged and reflectedby the descending liquid, and possessed, in the immediate
Size: 1769px × 1412px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookidsilversunbeampra00towl1
