I think it's for the same reasons as the bike light community. They want that advertised "max lumens" for a sustained period of time.
Although you tried fresh batteries, the dim light could still be a battery problem. Did you try any of your batteries in your friend's D10?LedTed Today, 07:07 AM
Tint of it is great! Like my TK35UE very much.kj2 Today, 06:54 AM
Your certainly excell Mr gopajti in your hobby. The misses is a photographer and is amazed by your pictures. The quality ,attention to detail(perfection)ven Today, 06:53 AM
Looking forward to trying it out tonight.
Black and a Ti please when these come back. Any idea when these will be available again. Thanks RockyRock*2012 Today, 06:48 AM