iPad mini What is backside illumination?

Discussion in 'iPad' started by chris566, Nov 2, 2012.

  1. macrumors member

    Joined:
    Oct 11, 2010
    Location:
    Carolina
    #1
    It was listed under camera specs on iPad mini. I just assumed that it meant an LED like the iPhone has. So what is this feature exactly?
     
  2. macrumors 65816

    Joined:
    May 3, 2011
    Location:
    Scotland
    #2
    It's just the camera sensor and how it is manufactured. Normal sensors have some of their wiring in front of the actual light sensor which actually blocks some of the light coming through to the sensor. This method is used because it is an easier manufacturing process.
    Backside illumination just means the wiring goes behind the light sensor meaning there is less to obstruct the light flow in front of the sensor and therefore this means more of the light from the scene you are imaging is captured by the sensor.
    The main benefit of this method is that more light captured means less need to amplify the signal which in turn means you get less noise (grain) in the captured image - especially noticeable in poorer light conditions.
     
  3. jimbo1mcm, Nov 2, 2012
    Last edited: Nov 2, 2012

    macrumors 65816

    Joined:
    Mar 21, 2010
    #3
    Shining a flashlight on your heinie
     
  4. thread starter macrumors member

    Joined:
    Oct 11, 2010
    Location:
    Carolina
    #4
    Thanks for the explanation, Donka. And for the sillyness, Jimbo.
     
  5. macrumors 65816

    Joined:
    May 3, 2011
    Location:
    Scotland
    #5
    You're welcome. ;)
     

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