Quoted:
From what I have read on this forum some say they notice a difference and some do not.  I have not noticed a difference when switching between Modbutton and SR07.

Quoted:
After reading about Surefire DS00 tail caps not allowing full current for on a Modlite I decided to a basic unscientific test.

Using a Modlite plhv2, DS00 tailcap, ST07 tape switch and Modbutton Lite tape switch.

Turned on the light with the constant on tailcap button and then pressing the ST07 tapeswich I saw an increase in lumen output.

Turned on the light with the ST07 tapeswich and then the constant on DS00 tailcap button I saw no increase in lumen output.

Turned on the light with the constant on DS00 tailcap button and then pressing the Modbotton Lite I saw slight increase in lumen output.

Turned on the light with the Modbutton Lite and then the constant on DS00 tailcap button I saw no increase in lumen output.

Oddly enough with the DS00  constant on the Surefire ST07 increased the lumen output more than the Modbutton Lite which is supposed to handle the 100% of the current.

Conclusion.  The ST07 allows more current than the DS00 button and in my case more current than the Modbutton Lite.

Quoted:
Is this an absolute thing, or it's just witnessed from time to time from some switches? And is it just switches, or do the tailcaps exhibit decreased output? I have a DS00 tailcap and an SR07 switch on my OKW. I see zero difference clicking between the two. It also doesn't seem different trying Z68 clicky cap.

Quoted:
Hard to believe that the company making the claim, can't afford a $39 Light Meter, and take two readings, using each switch on the same light?

Light Meter

Quoted:
Problem solved

https://i.imgur.com/pKWWAzR.jpg

Quoted:


These types or light meters are not meant for this.  You would need a very expensive light sphere to measure true lumen output.