iPhone 6 Plus - Video Recording Strange Waves

Discussion in 'iPhone' started by DJTaurus, Dec 11, 2014.

  1. DJTaurus macrumors 65816

    DJTaurus

    Joined:
    Jan 31, 2012
    #1
    When i record on 240fps and only in low light conditions i noticed some strange waves (like trembling) on the screen.... is that normal?
     
  2. FSMBP macrumors 68020

    FSMBP

    Joined:
    Jan 22, 2009
    #2
    Yes. The higher the frame rate, more light is required to make the video look normal. So, if you use Slow-Mo 240fps indoors, you'll notice the video pulsating. If you film outside in the daylight, it is less noticeable.

    In my opinion, 240fps should have came with a lens with a larger aperture (which is why I think Apple should have waited to do 240fps with significantly upgraded camera).
     
  3. DrezikFacts macrumors newbie

    Joined:
    Dec 11, 2014
    #3
    Those "waves" are not really because of low light. Low light is responsible for noise that you get but not the waves.

    Those waves are coming from a fact that you're using a light source that is very likely emitting at frequency of 50Hz (common light bulbs connected directly to a power source).

    Your camera shoots faster than your light source is refreshing and you end up with 240 frames in a second which are not filled with light of same power.
     
  4. ashenfang macrumors member

    Joined:
    Oct 1, 2012
    #4
    Exactly. If you had a light source that was 240hz, there would be no "pulsating"
     

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