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Volume 73 (2010)
- Issue 6 Pages 286-
- Issue 5 Pages 243-
- Issue 4 Pages 201-
- Issue 3 Pages 147-
- Issue 2 Pages 59-
- Issue 1 Pages 3-
Volume 73, Issue 3
Displaying 1-3 of 3 articles from this issue
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Special Topics: Progress of Photography in 2009
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2010 Volume 73 Issue 3 Pages 147-174
Published: 2010
Released on J-STAGE: December 10, 2011
JOURNAL FREE ACCESS
Lecture
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Yasuhiro Aono2010 Volume 73 Issue 3 Pages 175-179
Published: 2010
Released on J-STAGE: December 10, 2011
JOURNAL FREE ACCESSThe fundamental features and design technologies of digital still camera optics are described. In the current issue, we discuss the basic specifications of optics from the viewpoint of the relation to the characteristics of image sensor. In the next issue, we will explain the distinguishing feature of sampled imaging systems, and outline some design technologies of digital still camera optics.
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Technical report
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Ryuji Suzuki2010 Volume 73 Issue 3 Pages 180-184
Published: 2010
Released on J-STAGE: December 10, 2011
JOURNAL FREE ACCESSDegradation of water damaged photographic materials is discussed; the most vulnerable elements are gelatin layers and silver image. A simple and inexpensive chemical treatment is proposed, consisting of a bath containing a gelatin-protecting biocide and a silver image protecting agent. These ingredients were selected among those used in manufacturing of silver halide photographic emulsions or processing chemicals. Experiments confirmed that this treatment significantly reduced oxidative attacks to silver image and bacterial degradation of gelatin layers. The treated material was also stable under intense light fading test. Method of hardening gelatin to suppress swelling is also discussed.
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