carrot
Flashaholic
With three different Cree LED packages being commonly used in lights nowadays, it creates an incredible source of ambiguity on the forums. I hear a lot of R2 vs. R5, Q5 vs. R2, etc. The only thing you can rely on bin codes to tell you is the lumen output at a given input and efficiency.
Even worse is when someone generalizes, eg: Q5 is throwy, R5 is rather floody, and R2 is somewhere in between.
THIS IS WRONG.
It leads people to believe that bin codes mean something other than efficiency and maximum rated output! Any bin XR-E in a given reflector will exhibit the same beam characteristics to any other bin XR-E, and the same for XP-G and XP-E.
Better would be to say, XR-E tends to be throwy, XP-G tends to be floody, and XP-E tends to be somewhere in between. Even though such a generalization is horrendous, because the real difference is completely reliant on the reflector/lens used, at least this time the beam characteristics are properly attributed towards the LED package that causes the difference.
Just my 2¢. This has been bothering me for quite awhile now.
Even worse is when someone generalizes, eg: Q5 is throwy, R5 is rather floody, and R2 is somewhere in between.
THIS IS WRONG.
It leads people to believe that bin codes mean something other than efficiency and maximum rated output! Any bin XR-E in a given reflector will exhibit the same beam characteristics to any other bin XR-E, and the same for XP-G and XP-E.
Better would be to say, XR-E tends to be throwy, XP-G tends to be floody, and XP-E tends to be somewhere in between. Even though such a generalization is horrendous, because the real difference is completely reliant on the reflector/lens used, at least this time the beam characteristics are properly attributed towards the LED package that causes the difference.
Just my 2¢. This has been bothering me for quite awhile now.