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Photographic aspects of scanning electron microscopy
Author(s) -
Malin D. F.
Publication year - 1975
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1975.tb04539.x
Subject(s) - brightness , photographic emulsion , optics , scanning electron microscope , oscilloscope , photography , image quality , contrast (vision) , electron microscope , microscope , materials science , computer science , computer vision , image (mathematics) , physics , nanotechnology , art , layer (electronics) , detector , visual arts , silver halide
SUMMARY Factors governing photographic image quality in the scanning electron microscope are discussed with particular reference to the commonly used EXA camera on the Cambridge Stereoscan IIa. It is shown that the small image on the medium speed film suffers considerable loss of information due to the turbid nature of the photographic emulsion. Inexpensive modifications to the oscilloscope camera supplied with the Stereoscan are described which enable the superior quality of a larger format to be utilized. Appropriate settings of the brightness and contrast controls of the image tube with respect to the photographic system is discussed and the results illustrated in a series of micrographs.