You beat me to it. I am curious now. Like the OP stated it probably wouldn’t make any difference. I would like to see a XPg vs XP-G2 with 18650 side by side.
Look here. Top of the page has a MG P-rocket xpg straight swap to xpg2. Second page I post up the same data on an s-mini and a fenix LD01. No beamshots though....still been too dang warm outside at night.
There are a lot more important things in a light than a bit of different in output. If you’re going to pay that that much for something, get a zebralight.
However, you are technically right because it still is 25% brighter, you just will only perceive it as 6% brighter, aka you wouldn't notice it short of a side to side comparison.
Which is why I buckled and got an XPG2 preon1 on order. I’m guessing it’ll be more noticeable than 6% with the tighter beam pattern but still only visible upon comparison
I’m still waiting for a nice XP-G2 P60 Drop In, wether it is from SF or UF or someone else, I really love the beam profile of the old XP-G (+ OP reflector) and would love to see the new XP-G in a similar setup.
I hope it doesn’t takes the manufacturers too long do produce a nicely driven drop in.
I have done a lot of searching on the internet for a formula for perceived brightness but did’nt find any. Can anyone enlighten me with a link, please?
I have not seen any websites with a formula or anything, this is just what I have noticed. However it may have something to do with the square inverse law.