Eastman [company] - Eastman

… Thus, portraits were the main subject of photography at the time, and the large number of portraits produced in response to the public's demands served, from a social historical perspective, to deepen people's familiarity with photography itself and to spread knowledge about the characteristics of photography that differed from painting. Later, with the spread of Eastman Kodak's photographic system, which made it easy for even amateurs to take photos, as well as dry plates and roll film, anyone could take photos, and although the demand for commercial portrait photography itself decreased, photography became more familiar, and photographic images rapidly penetrated into everyday life. Furthermore, as the sensitivity of film increased and snapshot photography became easier, it became possible to capture momentary expressions and postures, and people began to see another type of human image in photographs that could not be captured by the naked eye. …

*Some of the terminology that refers to "Eastman Company" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　このように肖像というものは当時の写真の主要な表現主題であったが，大衆の要求に応えた大量の肖像写真は，社会史的に見れば，人々が写真そのものと親しみを深める役を果たし，絵画とは違う写真の特性についての知識の普及に役立った。のちに素人にも容易に撮れるイーストマン･コダック社の写真システムや，乾板，ロールフィルム等の普及によって誰にでも写真が撮れるようになったことから，営業的な肖像写真の需要自体は減少したものの，写真はいっそう身近なものとなり，写真画像の日常生活への浸透は急速に進むことになった。またフィルムの感光度がいっそう高くなりスナップ撮影(スナップ写真)が容易になると，瞬間的な表情や姿態が撮影できるようになったため，人々は肉眼ではとらえられぬもう一つの人間像を写真の上に見いだすことになった。…

※「イーストマン[会社]」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報