I took some data from the data sheets of some (top bin) LEDs (mostly by careful reading of their plots and some simple calculations) and gathered them into some comparative plots. Maybe you find that helpful.
All are at 25°C, as stated in the specs, so there's no thermal sag taken into account.
For all plots the minimum flux for that specific flux bin was used.
First luminous flux [lumen] vs. current:
That's a bit crowded, so I divided that by the current to get 'flux per current' [lm/A], which gives a better insight/overview:
And of course the efficacy (flux per power) [lm/W]:
Now I wish for some XP-G S2
R5 is 7% less.
All are at 25°C, as stated in the specs, so there's no thermal sag taken into account.
For all plots the minimum flux for that specific flux bin was used.
First luminous flux [lumen] vs. current:
That's a bit crowded, so I divided that by the current to get 'flux per current' [lm/A], which gives a better insight/overview:
And of course the efficacy (flux per power) [lm/W]:
Now I wish for some XP-G S2
R5 is 7% less.
