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Using a flashlight as colour enhancer?

Discussion in 'Basic Scuba Discussions' started by Corallium, Oct 17, 2019.

  1. Kimela

    Kimela Barracuda

    # of Dives: 200 - 499
    Location: St Louis
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    +1 on the DGX flash lights. They're great quality for the prices. I was so happy to have a good light as we went into swim throughs in Kona so I could see the open coral cups on the ceiling above us - wouldn't have seen anything at all - purple, red, yellow, green - all would have just looked black.

    Have fun!
     
    Corallium likes this.
  2. Perryed

    Perryed Nassau Grouper

    # of Dives: 500 - 999
    Location: Missouri
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    Cheap and fairly good is the Princeton Tec League. Now when you are night diving you may want to step up your game and use your daytime light as a back-up. Enjoy your diving!!
     
  3. davehicks

    davehicks Barracuda

    # of Dives: 1,000 - 2,499
    Location: Seattle
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    I am a big fan to Flood / Spot switching lights. I find the Flood mode works well for appreciating colors without washing out the subject. The spot is great for looking in holes, cracks, or signalling you buddy. Look for something that does both. There are good models from L&M Sola, Kraken, etc that are 1200+ lumens and $200-300.
     
    Corallium likes this.
  4. MAKO Spearguns

    MAKO Spearguns ScubaBoard Business Sponsor ScubaBoard Business Sponsor

    1,277
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    Corallium likes this.
  5. Storker

    Storker Divemaster

    # of Dives: 100 - 199
    Location: close to a Hell which occasionally freezes over
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    A couple of years ago, l was diving while on vacation. It doesn't happen too often, and it's a major PITA to lug the gear I want to use.

    I took this picture of this nudi, but because I hadn't brought a light I didn't see the wonderful reds in the picture before I reviewed the pics. If I'd brought my light (which I use on every local dive, no matter the lighting conditions) I'd seen the reds also IRL.

    Bring a light. At night, bring two. But always bring at least one.
     
    Corallium, KWS and nolatom like this.
  6. martincohn

    martincohn Solo Diver

    # of Dives: I just don't log dives
    Location: USA
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    Just something to think about. If you ever get hung up on something and the metal on metal gets stuck in tension...

    And that's why tech divers use that "silly string". You can cut sting, but you can't cut a stainless key ring.

    For lots of divers will never be an issue, until it is. Just one of those personal choices you have to make when you blow bubbles.
     
  7. nolatom

    nolatom Captain

    # of Dives: 200 - 499
    Location: New Orleans
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    "Science!!!" (apologies to Thomas Dolby):

    Why are so many deep-sea animals red in color?: Ocean Exploration Facts: NOAA Office of Ocean Exploration and Research

    Red light waves are the longest frequency and amplitude, so they get 'bent' out of the visible spectrum first as you descend. Then orange, then yellow
    This NOAA blurb is interesting. "Red" fish use being red to avoid becoming some larger fish's dinner, by appearing black at depth.

    Green blue indigo violet, with the shorter wavelengths, get deflected less and have more energy so they "last" more as we go deeper. That's mostly what you see at say 50 feet, depending on sunlight and vis.

    So yes, always bring a flashlight with you!

    Plus, the song is fun:
     
  8. Storker

    Storker Divemaster

    # of Dives: 100 - 199
    Location: close to a Hell which occasionally freezes over
    12,503
    8,878
    113
    I most definitely don't. I want every piece of gear attached to me to be removable using a sharp edge, so I very much prefer "that silly string"
     
    martincohn likes this.
  9. Chavodel8en

    Chavodel8en Barracuda

    # of Dives: 100 - 199
    Location: Oakland, CA
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    Absolutely. If you're going to be taking pictures, you may want to get a wide beam, as the spot light may present a too bright hot spot.

    I also bought a DGX light and I am satisfied with them, at that cheap price for my basic needs (use the wide beam to bring up colors for my GoPro clone). You can get more power if you prefer, paying a bit more.
     
    Corallium likes this.
  10. Ayisha

    Ayisha DIR Practitioner

    # of Dives: 500 - 999
    Location: Toronto, Canada
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    Absolutely. I just use an Olympus TG-4 and my Sola 2000 hand mounted dive light, and the difference in colour and clarity is huge.

    Sola lights are not cheap, but they're very convenient and small. The burn time is compromised by the power and small size.

    My DiveRite CX1 backup light looks like it would be great for u/w photography, but I haven't mounted it or tried it that way.
     

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