Show simple item record

dc.contributor.authorQuinn, Bernard W.en_US
dc.date.accessioned2017-05-02T15:47:54Z
dc.date.available2017-05-02T15:47:54Z
dc.date.issued1959
dc.date.submitted1959
dc.identifier.otherb14708759
dc.identifier.urihttps://hdl.handle.net/2144/21928
dc.descriptionThesis (M.A.)--Boston Universityen_US
dc.description.abstractA method of reducing the graininess of a photographic print and increasing resolution in low contrast regions is described. The method involves the printing of more than one negative frame to produce one print. This requires a series of negatives with identical detail coverage in the area to be printed. The success of the method depends largely on the precision of the solution of the registration problem. Each negative is printed in turn, using the normal exposure, partitioned in as many parts as there are negatives to be printed. Each negative must be registered as exactly as possible in the image area. Four different aerial emulsions were used to obtain the 35-mm negatives for the superimposition printing technique. Kodak films used were: Tri X-RP Aercon, Super XX-RP Aerial Recon, Plus X Aerocon (SO 1166), and SO-1213. The exposure versus resolution characteristics and the basic sensitometric curves were developed for these films prior to exposure of the final series of negative frames. The negatives were exposed under identical conditions with the exception of lens openings and shutter speeds at an object to image ratio of 160 to 1. The camera was a Contax IIA with a 50-nm F/2 Sonnar lens. The camera exposure settings were: Tri-X, F/16, 1/250 second; Plus X, F/16, 1/100 second; SO-1213, F/11, 1/50 second. Due to the level of brightness of the target, the camera lens was not used at its best aperture. No filter was used. [TRUNCATED].en_US
dc.language.isoen_US
dc.publisherBoston Universityen_US
dc.rightsBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.en_US
dc.subjectPhotography, analogen_US
dc.subjectImage resolutionen_US
dc.titlePhotographic graininess reduction by super-impositionen_US
dc.typeThesis/Dissertationen_US
etd.degree.nameMaster of Artsen_US
etd.degree.levelmastersen_US
etd.degree.disciplinePhysicsen_US
etd.degree.grantorBoston Universityen_US


This item appears in the following Collection(s)

Show simple item record