not sure if xpg vs xpg2 would really make a difference as far as output with 1aa… even if its 25% brighter… 125 lumens vs 100 maybe??
still has anyone seen any offerings in budget lights yet?
ive seen foursevens is offering a few but $62 for a single aa? NO.
I haven't seen any in AA, just one in 18650.
and what would that be?
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.
Keith
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.
Arrr…that be the one, matey.
100 lumens vs 125 lumens isn't 25% brighter
it's 6% brighter ..
a 25% lumen increase equals only 6% extra brightness
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.
Otherwise, get a xpg like Trustfire a3 for <$20.
The xpg2 has a tighter beam profile, better efficiancy and I would call 125/100 lumens, 1/4 more so 25% brighter. Am I wrong?
What Boaz is referring to is the fact that it takes quadruple the lumens for your brain to perceive double the brightness.
Ah yes, that I knew
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 would be interested in a XP-G2 AA.
Maybe E1320 will have a option for his upcoming AA group buy :heart_eyes:
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.
I always heard that the eyesight as well as the hearing was logarithmic in nature. Strange that a formula cannot be found.
I got a FourSevens Mini Ma XP-G2…$39. I run it on a 3v lithium AA primary. A nice little light.