Photography through the years过去两百年来摄影技术的发展
文章来源:未知 文章作者:enread 发布时间:2024-03-28 02:33 字体: [ ]  进入论坛
  Photography through the years过去两百年来摄影技术的发展

  如今,大部分人使用的智能手机都有拍照功能,想要拍摄和储存数码相片是件很容易的事。不过,从最开始的暗箱式相机到需要冲洗底片的胶片相机,从黑白相片到彩色相片,人们拍照的工具和方式经过了两百年的发展和演变。本期 “随身英语” 聊聊摄影技术的演变过程。
  Now, pretty much everyone has a camera in their back pocket – in the form of a smartphone. It's easy to take hundreds of photos without needing to really consider set up or storage. And it's very hard to imagine that, at one time, capturing an image was an almost impossible process.
  Going back even before traditional film cameras, there were camera obscuras. These were boxes with a small hole in them. Through one side, an image could be projected onto a wall on the opposite side of the box. However, the picture was upside down, very faint, and couldn't be captured in physical form – a bit like the images we see on modern projectors. In 1839, a French artist managed to work out a way to store and save photographs. He projected the image onto a shiny metal plate treated with chemicals. These images were in black and white. The first colour photo ever taken was of a tartan ribbon. The image was composed of three black and white photographs, each taken through a red, blue or green filter.
  So, how did we get from these early photographs to the kind we put into a frame and keep? Before the digital revolution, an image was captured on a negative, and this method is still chosen by some photographers today. A negative is an inverted image on a small strip of glass or plastic film which can then be exposed to light and processed onto photographic paper. When this was the main source of obtaining physical copies of photographs, it was a lengthy process with customers having to take the negatives to a shop and wait for their pictures to be developed.
  That was until digital photography came along in the 70s. Digital cameras captured images that could be saved as files and manipulated on a computer. Those are the kind of photos we take today on our phones.
  So, don't take the camera in your pocket for granted. It's been years in the making.
  smartphone 智能手机
  set up 设置
  storage 储存
  capture 拍摄,捕捉
  film cameras 胶片相机
  camera obscura 暗箱
  project 投映
  upside down 上下颠倒的
  faint 虚的,不清晰的
  projector 投影仪
  treat (用特殊物质)处理
  colour photo 彩照
  filter 滤镜
  frame 相框
  digital 数字的
  negative 底片
  inverted 颠倒的
  film 胶卷
  expose to 暴露于…
  process 冲洗加工(底片)
  photographic paper 相纸
  develop 冲洗(底片)
  manipulate 处理,修饰

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