Keldan Luna 8 LA-V 2100 lumen
Video Light Review
Reviewed by Lee Peterson
With the underwater video industry shifting into DSLR video, the need for superior lighting underwater has become a problem for those who want the best results. I have been testing the Keldan Luna 8 LA-V 2100 lumen LED video light and the color fidelity is the best of any of the light that I have tested. It is bright and the light distribution is very even and wide. I will be taking some underwater video with it shortly.
The best advantage with this system is that there are no external cords to mess with. It is completely self contained and in the water it weighs only 0.31 lbs. It can be installed on flex arms or Ultralight arms. With a burn time at high power of 80 minutes, two dives would be more than possible with just one charging.
Keldan Luna specifications
Keldan Luna 8 LA-V 2100 lumen LED Video Light
* Electrical power: 10-40 watt, 5 power levels
* Color temperature: 5000 kelvin @ 20 watt
* Color Rendering Index: 95 (Ra)
* Luminous flux: 750 - 2100 lumen
A 23 watt compact fluorescent lamp emits about 1500–1600 lm.[
The difference between the units lumen and lux is that the lux takes into account the area over which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux. The same 1000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux. Mathematically, 1 lx = 1 lm/m2.
* Beam angle: 90_
* Candle power (HIGH): 1400 cd
Candlepower is a measure of light taken at the source-not at the target. Foot-candles tell us how much of that light is directed at an object we want to illuminate. If you want to figure out LED equivalents, first you must know how many lumens your LED's each produce. Then divide that value by 12.57 and you have candlepower of the LED. This is not foot-candles, remember foot-candles are illuminance. You are measuring radiance.
* Battery: 59 Wh Li-Ion ( nom. 14.8 V / 4.5 Ah )
* Burn time: 80 min (HIGH) / 240 min (LOW)
* Charge time: 3-4 h
* Dimensions: 12 cm/4.8 in diameter, 29 cm/11.6 in length,
* Weight: 1.10 kg/2.42 lbs (0.14 kg/0.31 lbs in water)
* Accessories included: Bracket