Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . CllRONOPHOTOGRAPHY. 69 Still at best the Photographic Revolver was but anobserving- instrument, and little could be done in theway of combining the distinct views into one motion ;forty-eight separate pictures at the rate of twelve persecond would only last the fifteenth part of a minute,and even then would compress the events of seventy-two seconds into that time. To obtain a longer series^Donisthorpe in 1876 further developed Du Monts ideaof rapidly dropping an e
Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . CllRONOPHOTOGRAPHY. 69 Still at best the Photographic Revolver was but anobserving- instrument, and little could be done in theway of combining the distinct views into one motion ;forty-eight separate pictures at the rate of twelve persecond would only last the fifteenth part of a minute,and even then would compress the events of seventy-two seconds into that time. To obtain a longer series^Donisthorpe in 1876 further developed Du Monts ideaof rapidly dropping an exposed plate into a lowerchamber, so leaving the next free for exposure, andprovided a special gearing by which the shutter covered. V\c,. 62. the lens during the change. Nevertheless, Janssensinstrument was the model on which Marey foundedhis Photographic Gun, which was of real value foranalysing motion in such a way that it could besubsequently re-compounded by means of the name was well chosen, and is perfectly descriptiveof the apparatus shown in Fig. 62. The length ofbarrel was necessitated by the use of a long-focuslens, which was, of course, absolutely indispensablewhen photographing a small object at a considerabledistance. This barrel was arranged so as to telescopefor focussing purposes. The breech contained clock-work mechanism for effecting the series of exposures, 60 LIVING PICTURES.
Size: 2193px × 1139px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectmotionpictures
