Ikelite Yellow Fluorescence Filter For 3.9 Inch Ports (6441.16)

Looking for something different? Tired of night diving? Fluorescence will give you a whole new perspective on the world beneath the waves. With these excitation and barrier filters, you can convert your existing lights into a fluorescence set-up. No need to purchase expensive speciality lights or guided dives. For fluorescence photography, you will need a light with a dichroic excitation filter attached AND a yellow barrier filter on your mask and camera system. What you will generally see is a glow emitted from a variety of corals and animals, mostly in greens, blues, and reds. You may find two of the same type of corals - one which fluoresces, and one which does not. Dive your favourite spots in a different light and see what you've been missing! Fluorescence is technically the photon emitted as an electron relaxes from its excited state to its ground state, ie it is the glowing you are familiar with in glow sticks, jellyfish and forensics. A variety of organisms and materials above and below water exhibit fluorescence - often with the introduction of a particular wavelength of light. Fluorescence photography may be captured during the day by experimenting with using a very powerful, filtered light source and under-exposing the ambient light.