Thanks for your posts, it helped me learn a lot. I especially like the way you modified the device so you can read values directly off the meter without a need for conversion factors.
Inspired by your work, I did a quick test, using a vitamin jar cap as a diffuser. I had to add 1 piece of white envelope paper, and one piece of kleenex, under the cap, to “calibrate” it.
I used my new Integrating Cap to test two Lumintop lights.
On the left a ReyLight Tool w Nichia, ReyLight modes are mfg spec to be 1-16-80
On the right a Lumintop Tool w Nichia head, on a Maratac body, Tool modes are mfg spec to be 18-3-80
you can see in the beamshot that the ReyLight obviously has a lower Low
it just helps to be able to quantify the differences, here is the ReyLight Low calibrated to read 1 lumen
and this is how that calibration reads the Tool head on Low
here are the beams on High side by side, and their readings (these are both N219b lights, you can see they use different batches of CCT)
ReyLight High
Tool head High
I then tested an L11c w Nichia, claimed high is 140 lumens… surprisingly it is only about 5 lumens brighter than the Tool on High.
