The Idea No.1 (アイデア一号) are Japanese plate folders made by Rokuoh-sha, the manufacturing branch of Konishiroku (predecessor of Konica). They exist in meishi (5.5×8cm), daimeishi (6.5×9cm) and tefuda (8×10.5cm) size, and replaced the Idea A and Idea B series in 1923. The Pearl No.2 released the same year is essentially a rollfilm version of this camera line.
See also the other Idea models.
The Idea No.1 models have a mixed construction, with a wooden main body and a metal folding bed. The folding struts are quite large, and there is a handle at the top of the main body. The front standard mainly consists of a U-shaped metal part, and has no visible movement ability. The brilliant finder is attached to the top of the lensboard, straight in the middle. The bellows have single extension, and there is a distance scale on the photographer's left. The name N°1 IDEA is sometimes inscribed at the bottom of the front standard; at least some examples also have an IDEA embossing in the top handle, and an Idea logo on the ground glass hood.
The smaller meishi (5.5×8cm), then daimeishi (6.5×9cm) model, has no focusing wheel but a lever in front of the lens standard, whose exact purpose is unknown. The brilliant finder is collapsible and has a square window.
|Idea No.1, meishi-size (left) and daimeishi-size (right).|
From Ars Camera November 1924 and May 1927. (Image rights)
|Advertisement in Ars Camera November 1924. (Image rights)|
The Idea No.1 was reportedly released in August 1923. The November 1924 advertisement in Ars Camera shows an illustration of the smaller model. The camera is said to take film plates or pack film, and the format is not mentioned. Nothing is said of the shutter, and three lens options are listed:
The meishi and tefuda models were also offered in 1924 with Testar lenses; Tanaka suggests that this temporary measure was taken because the company was facing a shortage of lenses after its stocks were destroyed in the 1923 Great Kantō earthquake.
|Advertisements in Ars Camera June and December 1926, and February 1927. (Image rights)|
|Advertisement in Ars Camera May 1927. (Image rights)|
The advertisements in Ars Camera June 1926, December 1926 and February 1927 show the same illustration as in November 1924. In June 1926, the cameras are said to have received the medal of honor (名誉賞牌) at the Second Chemical Industrial Exposition (第二回化学工業博覧会), and prices are given for the versions with f/6.8 lens: ¥35 in meishi size and ¥45 in tefuda size, with a mention of "other models" (外種々). The December 1926 advertisement gives no specific information on the Idea No.1, and the February 1927 advertisement offers the camera from ¥29 in meishi size and from ¥45 in tefuda size.
In the May 1927 advertisement in Ars Camera, important changes are announced for the Idea No.1 and Pearl No.2. The film size of the Idea No.1 is switched to 6.5×9cm, and an insert taking regular meishi-size plates is supplied as an accessory. The price is given as ¥35 with a Deltas f/6.8 lens, six single-sided metal plate holders and one film pack holder. Another advertisement dated 1927 and mentioning the format change also lists a version with Trinar f/6.3 lens for ¥40.
Surviving examples of the larger tefuda model are known with the following combinations:
- Wollensak Deltas Aplanat 13.5cm f/6.3 lens, Gammax No.1 shutter (T, B, 100–10);
- Trinar Anastigmat f/6.3 lens, shutter by Gauthier (T, B, 100, 50, 25), inscribed Rodenstock on the speed dial.
- Wollensak Deltas f/6.8 lens, Gammax No.0 shutter (T, B, 100–10);
- Wollensak Velostigmat Ser.III f/6.3 lens, Betax No.0 shutter (T, B, 100–2);
- Trinar Anastigmat 10.5cm f/6.3 lens, Pronto shutter (T, B, 100, 50, 25).
- Kikuoka, p.29 of Kurashikku Kamera Senka no.10.
- Single extension: Kikuoka, p.29 of Kurashikku Kamera Senka no.10.
- Chronology of the official company history Shashin to tomo ni hyaku-nen, reproduced in Tanaka, p.94 of Kurashikku Kamera Senka no.10; this is repeated in Kikuoka, pp.29 and 31 of the same magazine. The date is simply given as 1923 in this page and this page at R. Konishi Rokuoh-sha.
- Tanaka, p.33 of Kurashikku Kamera Senka no.10.
- Advertisement in Ars Camera June 1926: 於第二回化学工業博覧会名誉賞牌受領.
- Advertisement in Ars Camera May 1927: 名刺判を六½×九珊判に改め普通名刺用中枠附.
- Advertisement reproduced in this page at R. Konishi Rokuoh-sha; the date is given in this other page.
- Example pictured in Sugiyama, item 1093 (lens type reported only).
- Example pictured in Sugiyama, item 1094, and in Kikuoka, p.30 of Kurashikku Kamera Senka no.10 (lens type reported only).
- Example pictured in Kamera no ayumi, p.83 (lens type reported only, as "Deltas Anastigmat", perhaps a mistake for "Deltas Aplanat"). The same shutter is visible on the examples pictured in Kikuoka, p.30 of Kurashikku Kamera Senka no.10, and in this page at Asacame.
- Example pictured in Sugiyama, item 1092 (lens type reported only).
- Example pictured in Sugiyama, item 1095 (lens type reported only), and example pictured in this page of the Yamada camera museum.
- Ars Camera. Advertisement by Konishiroku Honten in November 1924, June and December 1926, February and May 1927. No page numbers.
- Kamera no ayumi. Zen nihon shashin renmei sōritsu 50-shūnen kinen (カメラのあゆみ・全日本写真連盟創立五〇周年記念, History of cameras, commemorating the 50th anniversary of the All Japan Association of Photographic Societies). Tokyo: Asahi Shinbunsha, 1976. No ISBN number. P.83.
- Kikuoka Sei (菊岡清). "Konica history 3. Meiji 41-nen – Taishō 12-nen." (Konica history 3. 明治41年–大正12年. From Meiji year 41 (1908) to Taishō year 12 (1923).) Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.10, September 1987. No ISBN number. Konishiroku kamera no rekishi (小西六カメラの歴史, special issue on Konishiroku). Pp.24–32.
- Lewis, Gordon, ed. The History of the Japanese Camera. Rochester, N.Y.: George Eastman House, International Museum of Photography & Film, 1991. ISBN 0-935398-17-1 (paper), 0-935398-16-3 (hard). P.23.
- McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). P.538.
- Sugiyama, Kōichi (杉山浩一); Naoi, Hiroaki (直井浩明); Bullock, John R. The Collector's Guide to Japanese Cameras. 国産カメラ図鑑 (Kokusan kamera zukan). Tokyo: Asahi Sonorama, 1985. ISBN 4-257-03187-5. Items 1092–95.
- Tanaka Masao (田中政雄). "Konica history 4. Taishō 12-nen – Shōwa 8-nen." (Konica history 4. 大正12年–昭和8年. From Taishō year 12 (1923) to Shōwa year 8 (1933).) Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.10, September 1987. No ISBN number. Konishiroku kamera no rekishi (小西六カメラの歴史, special issue on Konishiroku). Pp.33–8.
- Tanaka Yoshirō (田中芳郎). "Meiji–Taishō jidai no Konishi Honten no kamera wo shiru tame no hon" (明治・大正時代の小西本店のカメラを知るための本, Books about the Konishi Honten cameras of the Meiji and Taishō eras). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.10, September 1987. No ISBN number. Konishiroku kamera no rekishi (小西六カメラの歴史, special issue on Konishiroku). Pp.92–4.
- Idea No.1 at Asacame
- Idea No.1 in the first page of the Yamada Camera Museum
- Pages of the R. Konishi Rokuoh-sha website:
- Idea No.1 in a page of the AJCC website
|Konishiroku prewar and wartime cameras ( )|
|plate||hand cameras||stereo hand cameras||strut folders||box||telephoto||SLR|
|Idea (original) | Idea A | Idea B | Idea Snap | Idea No.1 | Idea (metal) | Lily (original) | Lily (horizontal) | Lily (metal) | Tropical Lily | Noble | Ohca | Sakura Palace | Sakura Pocket Prano | Sakura Prano||Idea Binocular | Sakura Binocular Prano||Minimum Idea | Idea Spring | Korok||Champion | Cherry | Sakura Army | Sakura Honor | Sakura Navy||Idea Telephoto||Idea Reflex (1910 and 1911) | Idea Reflex (1932) | Neat Reflex | Sakura Reflex Prano|
|rollfilm||folders||box or collapsible||TLR|
|Pearlette | Special Pearlette | B Pearlette | Pearl (for plates and rollfilm) | Pearl No.2 | Pearl (Year 8) | Baby Pearl | Semi Pearl | Sakura Palace||Record | Sakura (box) | Sakura (bakelite)||Sakura-flex|