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Underwater white balance - got an idea

Discussion in 'Underwater Photography' started by Arty, Dec 1, 2019.

  1. CanadaDan

    CanadaDan Nassau Grouper

    # of Dives: 50 - 99
    Location: Winnipeg, MB Canada
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    Another for the white fins... I use them all the time. Easy part is you don't have to have a slate in one hand and the camera in the other.My full camera rig is a little cumbersome one handed.

    I use the Mares X-Stream's fwiw.
     
  2. scubadada

    scubadada Diver Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Philadelphia and Boynton Beach
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    Not everyone wants fins that come in white :)
     
  3. UFOrb

    UFOrb Barracuda

    # of Dives: 50 - 99
    Location: Brighton, UK
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    How about a pair of these (or just one, if you like the Michael Jackson look)?
    Showa 370 Assembly Grip Gloves - SafetyGloves.co.uk

    They add a little thermal protection and can protect your hands on descent/ascent lines and if you need to hold on to a rock or something...
    I have some I use for gardening etc but haven't used them on a dive...yet.
     
  4. UFOrb

    UFOrb Barracuda

    # of Dives: 50 - 99
    Location: Brighton, UK
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    ...you can possibly get white / grey neoprene gloves too, although I haven't specifically looked.
     
  5. Interceptor121

    Interceptor121 PADI Pro

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    This is really entertaining.
    It is called white balance but is performed on a neutral grey card besides white is reflective so it should not be used for white balance in any environment!
    Understanding White Balance
     
  6. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
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    arguable....white is not necessarily reflective.
    Gray scuba tanks work pretty well, too!
     
  7. al248005

    al248005 Solo Diver

    # of Dives: 200 - 499
    Location: Bridgeport, Ohio
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    I have a small slate I clip off to my tray
     
  8. tridacna

    tridacna ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: New Jersey
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    OK Arty. It’s two days later. What’s the big idea you have?
     
  9. Interceptor121

    Interceptor121 PADI Pro

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    i will do a last attempt with an example
    When you white balance in post on an editor that has IRE level you can white balance on white if there is a highlight it will refuse
    When you white balance in capture for the same reason you need a non reflective surface while indoor it is generally not a problem to white balance on a piece of matt paper if you try on a tank that is aluminum or on a white fin the risk of capturing a specular highlight increases and typically the camera takes it unless is too bright or even too dark for that matter
    So the only way to ensure the white balance is accurate is to use a non reflective spectrally correct card
    A hand or sand have a higher chance of giving a correct white balance of an actual white object because they almost never reflect
    A tank will reflect and a white fin filling the frame will saturate the exposure and will give an inaccurate reading
    We have done several tests along years and underwater the highest rate of success are
    1. A balanced grey card
    2. Sand
    3. Palm of your hand

    tanks and white card are better used in post i.e. once you have already taken the shot and are suitable for raw not for videos where you need it accurately before you shoot

    I have tried my best now onto ebay to buy some white fins lol
     
  10. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
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    One advantage of a 18% grey card is it can fill the frame and not mess up the exposure, since the exposure is "calibrated" for a scene that is, on average, 18% grey.
     
    Interceptor121 likes this.

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