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Volume 86 (2023)
- Issue 4 Pages 356-
- Issue 3 Pages 215-
- Issue 2 Pages 135-
- Issue 1 Pages 15-
Volume 86, Issue 4
Displaying 1-7 of 7 articles from this issue
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[in Japanese]2023 Volume 86 Issue 4 Pages 356-357
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSDownload PDF (228K) -
[in Japanese]2023 Volume 86 Issue 4 Pages 358-365
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSRICOH IMAGING COMPANY was established in 2011 when Ricoh Company, Ltd. transferred PENTAX camera business from HOYA Corporation(RICOH IMAGING COMPANY is renamed from PENTAX RICOH IMAGING COMPANY in 2013). Currently, the company handles both RICOH brand camera products represented by the GR and PENTAX brand SLR cameras, but since each has a long history, we have decided to describe the business of RICOH and PENTAX separately here, in chronological order of the year of establishment.View full abstractDownload PDF (3274K) -
[in Japanese]2023 Volume 86 Issue 4 Pages 366-374
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSFujifilm Co., Ltd.(at that time Fuji Photo Film Co., Ltd.)was established in 1934 with its headquarters in Ashigara (Kanagawa Prefecture)aiming for domestic production of photographic films. In 1944, an optical glass factory was established in the Fujifilm Odawara factory, and in 1944, Fuji Photo Optical Co., Ltd. was established, then full-scale manufacture of optical products was started. In 1948, Fujifilm released the first 6 × 6 cm spring camera, Fujica Six 1A, and since then it was continued to offer many models including compact camera, single-lens reflex camera, medium format camera, etc. for a wide range of users, from family photography to professional fields. During that time, we opened up new ways to enjoy photography with the development of the lens-equipped film “QuickSnap” expanding the global photography market greatly, and the instant photo system “Fotorama” and “instax”, etc. In 1988, foreseeing the arrival of the future digital age early on, in the imaging field Fujifilm announced the full digital camera that records images with digital method for the first time in the world. Pioneering the rise of today’s digital cameras, Fujifilm continue to pursue new ways of enjoying photography and video nowadays.View full abstractDownload PDF (3402K) -
-About the Exhibition on “The Roots of Photography and Printing in Japan”-[in Japanese]2023 Volume 86 Issue 4 Pages 375-382
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSEnoshima, located in Fujisawa, Kanagawa Prefecture, is one of the most famous tourist attractions, and the Samuel Cocking Botanical Garden Greenhouse Remains is located there. As the name suggests, this greenhouse was built by Cocking, who is famous for his achievements. However, it is not well known that his achievements were not limited to the creation of the botanical garden, but also led to the founding of companies and schools related to photography and printing in Japan. Konishi College of Photography(now Tokyo Polytechnic University)is celebrating its 100th anniversary this year, and the Enoshima International Art Festival 2023, which was held for 1.5 months in the spring at the Cocking Garden on Enoshima Island, featured an exhibition and presentation entitled The Deep Relationship between Samuel Cocking and Rokuemon Sugiura and The Roots of Photography and Printing in Japan. The exhibi- tion and description titled The Roots of Photography and Printing in Japan will be introduced.View full abstractDownload PDF (8989K) -
[in Japanese]2023 Volume 86 Issue 4 Pages 383-391
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSスマートフォン(以降スマホ)によって写真人口が激増している中，従来の静止画撮影用カメラ(以降スチルカメラ)市 場は縮小傾向を見せていた.しかしミラーレスカメラの台頭によって，レンズ交換式スチルカメラと交換レンズの市場が 再び復活の兆しを見せている.職業写真家(以降プロ)とアドバンストアマチュア(以降ハイアマ)の両極で市場が再形 成される傾向があり，プロに対しては機能性能の高度化，ハイアマに対しては趣味性の向上が見込まれる.後者のハイア マが存続する要因を，スチルカメラが人間の「感性」，すなわち五感中の「視覚・触覚・聴覚」に訴え，何れの感覚も互 いに影響し合って相乗効果を発揮していると捉えた.本考察では，手に保持して使用するスチルカメラの特質として重要 な要素である「音」と「振動」に特化した予備調査を行い，それぞれを表現する形容詞対と該当する具体的カメラ機種名 に関するデータを得た.View full abstractDownload PDF (1285K) -
[in Japanese]2023 Volume 86 Issue 4 Pages 392-396
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSDevelopment of autofocus technology for single-lens reflex cameras contained difficulties different from that of com- pact cameras. Here, the history of various efforts will be reviewed, and application of the autofocus technology for digital cameras and mirrorless cameras will be discussed.View full abstractDownload PDF (1220K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...2023 Volume 86 Issue 4 Pages 397-402
Published: November 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSIn the developing process of nuclear emulsion films, silver atoms are often generated on the film surface and silver grains irrelevant to the tracks are adhered on there. They obscure the tracks composed of silver grains. We have de- veloped a method for removing these surface silver grains by exposing them with hydrophobic iodine vapor to make to silver iodide and fixing them. The silver grains on the surface were altered to silver iodide by this treatment, but the iodine vapor could not penetrate into the hydrophilic emulsion layer and the developed silver grains on the track were left as they were. Only the grains at the terminal of the track that appeared on the surface were altered to sil- ver iodide. These silver iodide grains were removed by fixing treatment. Chemical removal of the surface silver grains on nuclear emulsion films was demonstrated to improve the efficiency of track detection.View full abstractDownload PDF (3430K)
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