Thought I should continue discussion on the LT45 here, rather than in the LEP thread...
So clearly, they changed the LT45, maybe several times. This manual is v1.4 dated 9/13, here's v1.5, while the latest on Extech is v2.1 dated 6/20. But my hard copy manual is v1.8 dated 6/16.
My LT45's serial no. is 200706144, so could be the year 2007, or could be a date code of 2020 July. Being that the manual id 2016, I'm guessing the serial no. reflects the year 2020.
Here's my conversion factors for the associated levels:
L0: 1.007 (incandescent)
L1: 0.846 (white)
L2: 0.881 (amber)
L3: 0.800 (green)
L4: 1.412 (red)
L5: 1.475 (blue)
L6: 1.148 (violet)
L7-L9: defaulted to 1.000
Only the colors are listed in the manual, not the conversion factors. So I think I should stick with L0.
I really, really like how this meter works - the MAX function works, unlike the LX1330B's, and you can set the distance and let it report in candela units - another great feature. I also love the battery saver feature - I've wasted a few 9V's from forgetting to turn off the meter :FACEPALM: . The calibration feature is nice, though the adjustments always seem to be very small so far.
Very much interested in a pass-around light or lights, for testing candela. Though looking over your meter results, many of the cheaper meters don't handle different temps very well, and the variations in meters can be a factor.