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Overexposure/Hot Spots

Discussion in 'GoPro and Action Cams' started by Sh0rtBus, Sep 25, 2017.

  1. Sh0rtBus

    Sh0rtBus BUBBLLLLLLES! My Bubbles ScubaBoard Supporter

    # of Dives: 100 - 199
    Location: Denton, TX
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    While diving Cozumel a few days ago I shot some video of Paradise Reef, which is a max depth of 40 ft. Lots of sunlight, but I still run a video light to add red back into the picture instead of a red filter. And it helps to illuminate under crevices, shelves, etc.

    GoPro Hero 4 Silver (borrowed)
    i-Das aluminum tray system
    i-Torch Venom 38 video light set at about 1500 lumens (I think)

    I noticed while watching the footage this morning that a lot of times the bottom in the background gets really bright and washed out, like hot spots. Curious as to what causes this and how to combat it.

    Thoughts?
     
  2. large_diver

    large_diver Loggerhead Turtle

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    I assume you are not running the light on its highest setting if it has multiple brightness settings (and choosing flood vs. spot if that is an option)? I know some folks will rig some sort of diffuser to help with this if it is recurring problem
     
  3. Sh0rtBus

    Sh0rtBus BUBBLLLLLLES! My Bubbles ScubaBoard Supporter

    # of Dives: 100 - 199
    Location: Denton, TX
    746
    461
    63
    The funny thing is it's in areas where it doesn't even appear light is reaching. And yes, it's a flood pattern light, as opposed to a spot. And no, the highest setting is 3800 lumens. I don't know that I'd even run that at night because it would cause too much backscatter, although I have in the past along with another 2000 lumen Sola. It was like swimming around with then sun!
     

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