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自从1839年法国画家达盖尔发明摄影术以来,历经银版、湿版和干版几个重要的历史时期。由于摄影拍照的过程和操作十分复杂,因此这一时期的摄影活动,只有少数的职业摄影师和高级发烧友才能掌控,摄影活动当时还无法进行普及。到了1888年,美国的伊斯曼干版公司发明了胶卷和软片之后,摄影的真正普及才成为可能。伊斯曼干版公司创立于1880年,公司位于纽约州的罗切斯特
Since the French artist Daguerre invented photography in 1839, he has gone through several important historical periods of silver, wet and dry. Due to the complexity of the process and operation of taking pictures, only a small number of professional photographers and senior enthusiasts can control photography activities in this period, and photography activities were still unable to be popularized at that time. By 1888, the real popularity of photography was made possible by the invention of film and film by the American Ismail dry-board company. Eastman Dryboard was founded in 1880 and is based in Rochester, New York