Alright, I know this post is almost dead, but I made the ultimate sacrifice for IdahoDoug and the rest of you that like data. I purchased a GE lightmeter off
Ebay for $5. It measures in Footcandles. I did before and after tests and this is what I found:
Tests performed at 10:30 PM and 11:00 PM tonight, Roy, UT, partly cloudy to cloudy. Ambient light readings were <10 FC. Cleaned both lenses by hand.
OEM lights:
1) 3' from lights: brightest point was tough to find. Just under 800 FC's.
2) 45' from lights, approximate safe driving distance: 25 FC's brightest spot
3) Outside of beam at 45' from light and approx. 25' from center: 8 FC's
4) At rearview mirror of my Subaru, bumper parked at 45' from light: 8 FC's
High Beams, all OEM, same points as above:
1) Infinity
2) 50 FC's
3) 10 FC's
4) 8-10FC's
JD lows, same points as above:
1) Well in excess of infinity (meaning the needle peaked out faster and farther than with high beams)
2) 40 FC's
3) 0 FC's...didn't even make the needle move.
4) 8 FC's solid
High beams with JD lights
1) Not measured
2) 70 FC's, easily obtained.
3) not measured
4) 8 to 10 FC's
What this should mean is that the JD lights are brighter, but more importantly that they provide a more focussed beam. So, if you don't like seeing the peripheral of a trail or the road, these lights are for you. If you like a wider pattern, the OEM lights are better. Sitting in my Subaru they were not offensive in the mirror...no more so than the OE lights.
So, if that's not LC Geeky enough for you...go smoke it somewhere else!
I'm sending the light meter off to a friend this week, so if you want any other measurements, let me know soon!