October 2013 Issue
Mailport: October 2013
Nice article on spotlights in the September issue. There is one consideration that was not directly addressed that Iíve found can be important in poor visibility: beam narrowness.
For general-purpose illumination, a light with a nice corona and good spill is ideal, but when spotlighting a narrow beam in low visibility, spill is not desirable. Spill light reflects off of moisture in the air and smoke, and reflects from nearby surfaces to make it harder to see what is in the distance. This is why the Streamlight Fire Vulcan has such a narrow beam with little spill. Firemen need a beam that will cut through smoke without backscatter.
Road Less Traveled, Valiant 40