Flashlight Lumens vs. Candlepower - Sorting Through Advertising Gimmicks | Pinnacle Flashlights Blog, Interesting article on candlepower vs lumens.

To understand the advertising about lights which claim “80 lumens” or “1,000,000 candlepower,” you need to understand what those things are. To put it

http://www.pinnacleflashlights.com/blog/2009/04/30/lumens-vs-candlepower-sorting-through-advertising-gimmicks/