Ledil Crystal, coming soon

Outside of lux meter readings, these might offer more than what is derived from botched performance data. After looking at OL's SRK build threads, Im pretty interested in what a carefully optimized TIR might do in the outdoor environment. I know this is a rough comparison, but it does illustrate a point. From Old-Lumens SRK build threads:

Mouse out: SRK with stock reflector

Mouse in: SRK with FT 20mm 15-Degree Optical Lens