Recently I purchased a Fisheye FIX LED500DX. I really liked the idea of rheostat for variable brightness so I chose a light like this instead of an ordinary dive light. I just returned home from a week of diving on Cozumel with the Fisheye FIX LED500DX. Here are the grades:
As an aiming light for close-ups & macro: A+
As a general aiming light: F
As a backup or primary dive light: F-
The Fisheye FIX LED500DX uses 8 AA batteries. I purchased 20 brand-new high-quality Eneloop AA 2000mA NiMH batteries. These are low self-discharge and have a long shelf life. They came fully charged and ready to go. In the week before I left for Cozumel, I ran all batteries through the "break-in" mode of my MAHA MH-C9000 "smart charger." During the dive trip, I cycled the batteries through both the strobe and the Fisheye FIX LED500DX, and recharged them every night on the MAHA MH-C9000.
The Fisheye FIX LED500DX and the MAHA MH-C9000 smart charger
As a focus light for night-time close-up and macro photography, I loved the Fisheye FIX LED500DX. It made night photography so much easier. The beam was wide and even. At full power it can even provide some additional illumination of the subject that is not entirely overcome by the flash.
As a general focus light and dive light, the Fisheye FIX LED500DX is a total failure. The light is advertised as having a 72 to 90 minute life as a primary dive light. It will automatically switch to the low-power mode when the batteries become low.
I found that, when turned to the full power setting, the Fisheye FIX LED500DX reverted to the low-power mode in only two minutes! I was unable to turn the light back to the bright power mode for the rest of the dive. In the low-power mode, the light had a life of several hours.
In the lower power mode, there was enough light for close-up and macro shooting. But I could not get the camera to autofocus on anything more than 3 feet away, and I could not see anything in the camera's viewfinder if the subject was more than 5 feet away..
I took my camera set-up on a cave dive on Cozumel Island. I had my primary 18W HID light clipped off to my right D-ring and used the Fisheye FIX LED500DX as my primary dive light. This too was a total failure because the Fisheye FIX LED500DX immediately reverted to the low-power setting and I was unable to get the camera's autofocus to work properly in such a low-light environment. I had to use my 18W HID light for focusing.
THE FISHEYE FIX LED500DX SHOULD NOT BE USED AS A PRIMARY DIVE LIGHT AS ADVERTISED.
Edited by harrym, 14 December 2009 - 09:12 AM.