
Originally Posted by
uk_caver
I'm not sure what a mass manufacturer has to gain by specifying LED types, since not only do most people not have much of a clue what LED is which (as pointed out above), but even thinking of customers who do, it's not clear that adding information is going to help sales overall.
For instance, if someone made a light using XP-Gs when they were the latest thing, mentioning that on the packaging could end up, after the release of XM-Ls, with some people downrating the light for not having the latest emitters even if XP-Gs were the better LED for that design.
(Currently I'm making a recently-designed module to retrofit existing lights, where even though I have freedom to use any LEDs, I'm using an XP-G and an XP-E. The XP-G (for a flood beam) because I get a wider range of nice colour bins than if I used XM-Ls, and the XP-E (for a spot beam) to get a tighter beam.
However, I'm fairly confident that in my particular target market, unless I made an effort to explain my choices in detail (which many people wouldn't read anyway), of the people who actually care at all about LED types, a decent fraction would automatically assume 'XM-L->better' since that's about the limit of their knowledge.)
I'd also wonder if, were the public actually more educated about LED types, that would just lead to the less-scrupulous manufacturers trying to make a big deal out of the type while putting in LEDs from the worst brightness bins.
If all the package says is 'Uses Cree XM-L!!', but it's a T5, some people might take that as meaning it's better than a light using an XP-G even if output is essentially the same as an R5 XP-G, at least up to 700mA or so.
And as for smaller manufacturers making lights which are:
I suppose it might depend on what people's idea of 'much better' is.
Personally, for me to call an LED meaningfully better in terms of efficiency, I'd be thinking of an improvement in output of ~20% compared to some other LED at the same power consumption, and to call an LED much better, I'd be thinking of more like 40% higher output.
In that sense, to me, for operation in the sub-500mA range, an R4/R5 XPG is only just-about 'much better' than a U2-bin Seoul P4.