yes, thank you
one of the wildest, most unreliable lumen spec info I find is in regard to Maratac Flashlights.. even beyond the OTF vs LED lumens differences.. Muyshondt also has some weird numbers...
the benefit of owning a lightbox is that I can compare my lights to each other, then at least I know where they stand relative to each other...
by using a lightbox, I can catch differences in brightness that are very difficult to notice otherwise, as per HDS logarithmic nature of vision info.. in which he sets each step up in brightness to be 50% brighter than the one below.. That sounds like a big jump, but in practice, its not that big.. our eyes are nowhere near as calibrated as an HDS.. eyes tolerate a very wide range of variation in not only lumens, but also tint. Our brain is constantly adjusting the image data our eyes are transmitting.
The lightbox also helps me learn what lumen levels I am enjoying and choosing to use most, in various settings.
One of the reasons Im excited about trying in the HDS passaround is to learn what lumen levels I tend to prefer, for example when I walk through the house at the end of the night with the lights off, vs, the level I find convenient during the day, indoors, and the level I like to worship the porcelain gods in the dark of night.. etc
Im going to be able to read the HDS calibration levels, and compare them to my lightbox.. Then I will be able to figure out if some of my other lights have modes close to the ones the HDS showed me I like..
its going to be flashy fun!
Im also excited about the HDS passaround having an XPG high CRI.. I have one of those LEDs in a different light, and it is a personal favorite..