Originally Posted by
acidfast7
I know the difference between Lux and Lumens. Most reputable light makers list Lux over the areas and distances described in the German regulations, which state that certain areas at certain degrees and distances from the headlamp mounted at the particular height and angle relative to the ground.
Therefore, I know that the light company has done the necessary measurements so that I know it works in a particular manner, hence I know that it's over a threshold performance.
As far as lumens goes, it's just a crapshot measurement that doesn't state when the light actually goes. In addition, it's grossly exaggerated by most makers, because the US doesn't have a mandatory testing service that must be undertaken before a light enters the market. So, when I see lumens, I know that 99% of the time there's no quality minimum that has been surpassed.
I have seen few distance measurements with lux data. Sixty Fiver and Telly both list lux measurements without any reference to a distance measurement. Sixty Fiver even has a screen shot from a manufacturer that includes a lux measurement without a distance measurement. Perhaps there are standards out there that the manufacturers use but I haven't seen any reference to those standards. That makes the measurement as meaningless as most lumen claims.
Originally Posted by
acidfast7
... really you want I'm totally bored.
Huh?