I just purchased a SF L2, and while I was familiar with and expected the donut hole beam (I used to have an L4), I still find it a little distracting. SF lights generally have the type of beam that are considered to be the standard by which all others are judged, and in the past I would have NEVER considered putting WriteRight on a SF...but on the L2's donut hole, it WORKS! I put a piece of WriteRight on the lens of my new L2 (it MUST be the textured type, designed for monochrome PDA screens), and the donut hole vanished! Now I have a donut hole-free L2! FYI...
PJD
PJD