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127 is a roll film format for still photography introduced by Kodak in 1912. The film itself is 46 mm wide, placing it between 35 mm and 120 "medium format" films in terms of size. The image format normally used is a square 4 cm × 4 cm. However, rectangular 4 cm × 3 cm and 4 cm × 6 cm are also standard. 127 enjoyed mainstream popularity until its usage began to decline from the 1960s onwards in the face of newer, cartridge-based films. However, it survives as a niche format. ==Technical details== 127 is a roll film, 46 mm wide. Frame number markings for the 4×4 and 4×6 image formats are printed on the backing paper, while 4×3 cameras typically have two frame counter windows, exposing the left and right halves of the 4×6 frame. Using the square format, there are 12 exposures per roll; 4×3 and 4×6 give 16 and 8, respectively. Less commonly, other frame sizes have been used. For its “Alfax” model (circa 1940), Kimura Kōgaku had 4 cm × 4.5 cm frames, spaced by markings on the wind knob. In addition, the manufacturer C. F. Foth & Co. used an image format of 3.6 cm × 2.4 cm (the same size as is standard for 135) for initial versions of their 127-based “Derby” camera. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「127 film」の詳細全文を読む スポンサード リンク
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