It's friday! I do not work on saturdays and sundays so it's free time!
I decided to pull my luxmeter out of drawer and start to use it.
I did some measurements and anyone who wants is kindly asked to post their info for the sake of comparing the results. Nothing really alot meaningfull but it can be fun.
Later on i have to build myself something along the line of an "integrating sphere" for trying measuring lumens.
Test method:
Floor setup of luxmeter, fresh battery, measure tape offsetted by luxmeter height from floor level and exactly 1 metere from the flashlight lens (give or take a very few mm of the margin of error).
Fully charged hi-max 18650 li-ion for li-ion capable flashlights/dropins
10 seconds reading trying to catch a best possible readout on the luxmeter.
the luxmeter itself (photo stolen from net from somewhere):
My candidates and their respective readings:
Q5 based Ultrafire C3 SS on max with AA Eneloop - 2112 lux
R2 based uniquefire hs-801 on max: 33400 lux
R5 XTAR D01 diving flashlight on max: 13300 lux
R5 p60 dropin 5mode (MF) SMO reflector at high: 8390 lux
XM-L p60 dropin 3mode H-M-L (MF) SMO reflector at high: 5390 lux
Q5 p60 dropin 1mode at max (DX) OP reflector: 7920 lux
Now i'm interested how similar results can be had considering the cheap luxmeters accuracy, emiiters, reflectors, lenses, drivers, exact distance can all affect measurements.