Replacement bulbs for your Nocturnal Lights dive light or underwater photo/video light. 50 watt and 35 watt bulbs are also available. Use the following guidelines to choose which bulb is best for you.
The wattage is the deciding factor of how bright your dive light is. The burn time will be inversely proportional to the wattage so if you use a higher wattage bulb, you will get less burn time from your dive light. Nocturnal Lights use 14.4 volt overvolted batteries which produce approximately 40% more light than standard 6 or 12 volt dive lights. This means the 20w bulb have the brightness of a 28w bulb, a 35w bulb will have the brightness of a 49w bulb, and a 50w bulb will have the brightness of a 70w bulb.
A cooler color temperature (4700k/pure white) is typically better for visibility because it travels better underwater while a warmer color temperature (3800k/warm/yellowish white) is typically more comforttable to the eyes. Scuba divers we talked to usually prefer 4700k over the 3800k.
When it comes to underwater photography and videography, experienced divers usually adjust the white balance before shooting so the picture and the movie will be produced with minimal discoloration. It comes down to a matter of preference as some award winning underwater videographers prefer a whiter light during the day and a warmer light at night.
Narrow/Spot beam angles (12 degrees) are usually preferred by divers when they use the lamp as a primary dive light whereas the wide/flood beam angles (38-60 degrees) are usually preferred by photographers and videographers. With a narrow beam, you will be able to see further with less illumination close-up whereas with a wide beam, you will be able to see more close-up. Note that a diffuser can be used to spread the light out even more and is used for underwater photos and videos.
Please select the appropriate bulb style below.