yes but to obtain maximum focus, the head is to much unscrewed, so it wobbles
and the projected die is not perfect square it is a little bit roundish square
i dont like the aspheric on the 2d80
on my maglite sst90 with aspheric lens,
the projected die is perfect square and the head is allmost...
here another simple but good optic-simulator:
http://www.schulphysik.de/java/physlet/applets/optik1.html
its in german, but no problem all what you need is :
linse=lens
punktquelle = ideal lightsource
alles löschen = delete all
markiertes löschen = delete marked object
the lens focal point...
Re: sst-90 monster with big aspherical lens
hello together,
nice flashlight , but if i see right the heat sink is made from brass, better would be copper at that price....
greetings from germany