Mark Vlahos
Contributor
My choice is a personal one based on my own reasons. These reasons may or may not apply to you. I compared the Halcyon, DiveRite, and Sartek 10 watt HID's. The Halcyon and Sartek had adjustable but contained optics while the DiveRite had an open reflector with the test tube over the lamp. Since I travel with my dive gear the DiveRite seemed just too fragile to endure the rigors of luggage on a daily basis. The Sartek had better strain reliefs on the cord where it came out of the battery canister, this appeared to be far more rugged again because of the constant abuse of packing in my luggage. The light output of the three lights was actually the last thing I considered. The DiveRite had by far the best light output and quality of beam, the Halcyon was a little better than the Sartek. I considered that the light actually working with an unbroken reflector, and unbroken cord seals was the best choice for me. For me 10 watts was as bright as I needed so I did not look at the brighter lights that were available at the time.Spoon:thanks for that awesome explanation mark! hit the spot. i was originally going to settle for ten but i am getting into wreck and cave and will defintely upgrade to a bigger one in the future so i wanted an all around light that is not too much yet practical for me. also i wouldnt have to worry about upgrading in the future.
also no one hardly dives hids here becasue of the prices. most of my buddies just have regular dive lights and i will most likely be the light source in most of our dives. as for the tech dives i wouldnt know bec i dont have any tech/wreck buddies as of the moment. what would you choose? 18/21 in terms of balance, color rendition and intensity? if only the prices were different id get the cheaper one. barry had to make my decision making worse by pricing the 18/21/24 all the same![]()
For you, the choice will be personal. Consider that the reflector type will play a role in the light quality as well as durability. An open reflector with a test tube style lamp will gather the light more efficiently, but the trade off is that it is more fragile. Higher color temperature will give you the illusion of greater light output when lumens are otherwise the same. Color rendition is only an issue if you are looking at LED's, and frankly the LED manufacturers are working hard on this issue and making considerable advances. Think about battery size and run time. 3 hours of run time would ba about the minimum I would like, 4 hours or more would be better. Strain reliefs, switches, bulk of the light head, these are the things you should be thinking of as well as light output.
Mark Vlahos