Why the ZOOM lenses has this name ???

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  Hi folks,

 

  Yesterday the doughter of a friend of mine (14 y.o.) asked me why the zoom lenses has this name ... and I couldn't answer because I myself don't have idea why this name is used.
  Anybody have a clue of the origem of the ZOOM name for variable focal distance lenses ???

  Yours,

  Charles



T+

Charles

Não deixe de visitar o http://www.loucoporfotografia.net, sua revista de fotografia na web, a única da internet brasileira.


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