How focusing screen works?

Discussion in 'Beyond the Basics' started by tecboy, Jan 18, 2016.

  1. tecboy

    tecboy No longer a newbie, moving up!

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    I've never understood how focusing screen works, and how the auto focus points appear inside the viewfinder? What material does it made of?


     
  2. astroNikon

    astroNikon 'ya all Bananas I tell 'ya Supporting Member

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  3. dxqcanada

    dxqcanada Been spending a lot of time on here!

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