At first you will begin to see the variance of colors while post processing and discover that there really is more to it than what meets the naked eye.
There are other very subtle colors that can be seen and photographed. The yellow is designed to remove the reflected blue light and transmit only the fluorescence from the underwater life. To get the best out of the viewing experience you must wear a yellow filter visor over your mask. The light is best delivered by the new generation of high intensity LEDs. There are more subjects that glow more brightly. While most people think of ultraviolet light when they think of fluorescence, it turns out that blue is much more effective at making underwater organisms glow than UV. I positioned the light very high from the subject which helped to create a little contrast, but isn’t 100% on-point. I later experimented by adding a second Sola with the red light turned on and set to a low level. When I found my starting point I turned out my regular dive torch, working by moonlight I slipped the barrier filter over my mask then turned the blue light on and instantly was surrounded by a new divesite. Scattered on the sandy and now invisible bottom the hard mushroom coral’s all seemed to glow. The green color cast and glow is the first and most pronounced color that you will see.
RED COLORCAST IMAGES IN UNDERWATER ISO
Polyps of a Fungia mushroom coral - ISO 3200 - F11 1/80 The greens, yellows and reds will glow back at you and the hardest part will be deciding what to photograph first.” As explained to me by Charlie Mazel, a pioneer in underwater fluorescence technology: “What that really means for you as a photographer is that you will need to explore the divesite and shine the bright blue light on the reef. In a nutshell, fluorescence is the name for the absorption of light at one wavelength or color, and its re-emission of light at another wavelength. The mask filter allows the user to see what is fluorescing the filter over your camera port allows you to photograph the fluorescence.
One filter is put over your mask and the other over your housing’s flat port.The light can be hand held or attached to your housing via strobe arms, which I prefer. To get started shooting Fluoro photos underwater, a basic 3-part kit is needed. Logistically, this technique has been out of reach for many non-professionals for several reasons (mainly the cost of lights), but recently a few companies have emerged with new products and have re-introduced Fluoro diving and photography to the industry. Underwater Fluoro photography has been slow to gain in popularity since its early beginnings.
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