Journal of The Society of Photographic Science and Technology of Japan
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
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Volume 72, Issue 3
Displaying 1-7 of 7 articles from this issue
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Special Topics: Progress of Photography in 2008
Special Topics: Innovative Camera Technology in 2008
  • LUMIX DMC-G1 - New Pleasantness of the Camera with Interchangeable Lenses That G1 Provides -
    Hiroshi Ueda, Shinji Hataji, Seiki Morishita, Yoshiyuki Inoue
    2010 Volume 72 Issue 3 Pages 190-194
    Published: 2010
    Released on J-STAGE: August 27, 2011
    DOIhttps://doi.org/10.11454/photogrst.72.190
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    Panasonic introduced in October 2008 the "LUMIX DMC-G1", which is adopting the Micro Four Thirds standard. This camera was a hot topic from the time of the announcement in September and after the sales start it was highly evaluated not only due to its small size and light weight, but also due to the compact camera like easy operation realized by the mirror-less construction and due to the performance, which is on the same level like conventional consumer SLR cameras. Within this chapter we will explain about the technology behind the high-speed AF, which was seen as difficult to realize in a system based on Live View, and the high resolution Live View Finder, as well as about the new challenge of color variations, presented for the first time for an interchangeable lens camera.
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  • Development of High Speed Digital Camera: EXILIM EX-F1
    Osamu Nojima
    2010 Volume 72 Issue 3 Pages 195-198
    Published: 2010
    Released on J-STAGE: August 27, 2011
    DOIhttps://doi.org/10.11454/photogrst.72.195
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    The EX-F1 is a high speed digital camera featuring a revolutionary improvement in burst shooting speed that is expected to create entirely new markets. This model incorporates a high speed CMOS sensor and a high speed LSI processor. With this model, CASIO has achieved an ultra-high speed 60 frames per second (fps) burst rate for still images, together with 1,200 fps high speed movie that captures movements which cannot even be seen by human eyes. Moreover, this model can record movies at full High-Definition. After launching it into the market, it was able to get a lot of high appraisals as an innovation camera. We will introduce the concept, features and technologies about the EX-F1.
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  • Development of Canon's Digital SLR Camera: EOS 5D Mark II
    Jun Terashima
    2010 Volume 72 Issue 3 Pages 199-204
    Published: 2010
    Released on J-STAGE: August 27, 2011
    DOIhttps://doi.org/10.11454/photogrst.72.199
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    The EOS 5D Mark II is a cutting-edge digital SLR camera aimed at advanced amateur photographers and equipped with a 35 mm full-frame CMOS sensor with 21.10 effective megapixels. It features many advanced digital technologies, such as a normal ISO speed range up to ISO 6400 and Full HD movie shooting. This document outlines the main distinguishing features of the EOS 5D Mark II.
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  • Development of Digital-SLR Camera, Nikon D90
    Shigeo Matsushima, Riichi Higaki
    2010 Volume 72 Issue 3 Pages 205-208
    Published: 2010
    Released on J-STAGE: August 27, 2011
    DOIhttps://doi.org/10.11454/photogrst.72.205
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    The Nikon D90 is a mid-level digital-SLR camera developed primarily for amateur photo hobbyists. It incorporates excellent image quality, support for high sensitivities, and quick response in a compact body. The primary features of the D90 are introduced in this article.
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Original paper
  • Identification of Nuclear Fragments Formed During Fragmentation Reaction with a Heavy-Ion Beam by Using a Hybrid Track Detector System Combining Silver Halide Photographic Film and CR-39 Plastic Track Detectors
    Ken'ichi Kuge, Kentaro Hayashi, Yusuke Endo, Nakahiro Yasuda, Chika Fu ...
    2010 Volume 72 Issue 3 Pages 209-213
    Published: 2010
    Released on J-STAGE: August 27, 2011
    DOIhttps://doi.org/10.11454/photogrst.72.209
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    This study examines the feasibility of analyzing nuclear fragmentation reactions. This analysis can be used to estimate the absorbed dose in carbon ion cancer therapy. A hybrid detector system that combines detectors of a silver halide photographic film and a CR-39 plastic plate was built in order to identify the charge of high-energy therapeutic ions with charge (Z) from 1 to 6. Photographic films detect minimum ionizing particles such as high-energy protons, but they have poor charge resolution for ions with high Z. The CR-39 detector records the tracks of the heavier ions but is not sensitive to ions with low Z. Combining the two detectors would enable the identification of ions with both high and low Z. Tracks consisting of developed silver grains on the photographic films were observed using an ultra track selector (UTS) and the apparent volumes of the tracks were obtained as volume pulse heights (VPHs). The etch pits on the surface of a CR-39 plate were observed using the recently developed scanning optical microscope (HSP-1000) in order to obtain their minor axes. Measurement techniques, including track matching on the hybrid system between the films and CR-39 plate, were established. Analysis of the etch pits on the CR-39 plate suggested that the etch pits were formed by C, B, and Be ions. The tracks formed by protons and He ions on the films were clearly separated from those formed by other heavy ions. However, Li ions could not be identified using this method. Further research needs to be carried out for the identification of Li ions.
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Technical report
  • Conservation of Daguerreotype Housing - From the Collection of The Tokyo Metropolitan Museum of Photography
    Yoko Shiraiwa, Takako Yamaguchi
    2010 Volume 72 Issue 3 Pages 214-219
    Published: 2010
    Released on J-STAGE: August 27, 2011
    DOIhttps://doi.org/10.11454/photogrst.72.214
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    Daguerreotypes are extremely delicate and sensitive to environment and therefore housing is inevitable. In this case, housing stands for mounting the object for protection and often is a part of the object itself. Therefore, when treatment is performed to the housing, its value and characteristic must be taken into account. Through the two case studies from the collection of Tokyo Metropolitan Museum of Photography, an overview of mounting and housing will be presented. It evaluates the problems related to the original housing, and the applied conservation method and techniques are described. The rehoused Daguerreotypes are now less vulnerable to environmental contamination and can be accessed safely for handling, display and storage.
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