Thanks for all the info, looks like a great light.
How much are the VB50 heads and the battery packs?
Frensel lens : online to buy
they are really thin ( better translucence ) and don't need to much space
Have you ever tried any of the Edmunds aspherical lenses at $35-$45 and compared them to the DX lenses at $2.00?
I'm wondering how much better they are?