i didnt find any reference in the bookphindar said:That's how I've always treated it. It may or may not be how the book does it, but its simple and intuitive enough for me to remember it at the table. (I'm 90% that is how the book does it, but 90% isn't as certain as it used to be.)
Edit: Low-Light removes the 20% miss chance, so elves fighting in the moonlight are good to go. (See above disclaimer.)
Except: (http://www.d20srd.org/srd/specialAbilities.htm#lowLightVision)werk said:D&D 3.5 has three light settings, dark, shadowy, and bright.
Low-light vision merely sees twice as far as normal.
Hope that helps!
Destil said:"Characters with low-light vision can see outdoors on a moonlit night as well as they can during the day."