Surefire M600U Scout Light
The M600U from Surefire is an all-around great weapon light. It’s built to take abuse and is one of the most proven reliable weapon lights on the market. It comes ready to use on any picatinny rail right out of the box with a rear click tail cap (momentary and constant-on function), 2 CR123As, and a rail clamp mount.
It has 1000 lumens and 11,300 candela which makes it effective at close to medium range. Positive identification on a target in total darkness at 40-50 yards is about the most you can rely on. Beyond that, you can make out a target within 100 yards but the details will not be easily discernable. The beam is more flood (wide) than a spot, but great at what it does.
|Output — White Light||1000||lumens|
Lumens is the total amount of light emitted.
Candela is how far and tightly focused the light is thrown onto a target.
Lumens is important, but Candela is king when it comes to identifying targets. Lumens can light up a room (flood light), but candela can light up the details on a particular object (throw light).