The rings are a white-wall problem only.
And yes, I think the 19mm is far better with a LuxV than the 20mm as it gives you a "concentrated flood" that has some throw and only the hint of a hotspot, meaning you don't have any annoying brightness shifts in your beam.
I never considered the LuxV in a 20mm a good choice, but the 19mm is very cool with the LuxV.
Of course that is IMHO and YMMV.
As for those tech-questions ... might wanna ask in the McGizmo or Homemade Forum? Better in the Homemade I think ...
Nope, not easy doing those pics, but it's worth it as I can use them over and over
bernie
And yes, I think the 19mm is far better with a LuxV than the 20mm as it gives you a "concentrated flood" that has some throw and only the hint of a hotspot, meaning you don't have any annoying brightness shifts in your beam.
I never considered the LuxV in a 20mm a good choice, but the 19mm is very cool with the LuxV.
Of course that is IMHO and YMMV.
As for those tech-questions ... might wanna ask in the McGizmo or Homemade Forum? Better in the Homemade I think ...
Nope, not easy doing those pics, but it's worth it as I can use them over and over
bernie