For what it's worth, this lens does have a measure of performance, however small. It isn't glaringly bright like the Yellow or Persimmon lenses are, but I do notice a (slight) improvement in clarity. I have used it on dark and gloomy days where sun is out but not cutting through the clouds so rather dark. This lens does brighten things up a bit, but more interestingly does seem to sharpen things up like a polarized lens would in that same place. I suppose I would call this one a winner since it does in fact do something new, but I don't find it useful enough to really need or want any more. I tend to lean on my H.I. Yellow lenses (in particular) for those same conditions and find them much more suitable. Yes, I know, that's not what the "STADIUM" lens is meant for, got it. But it would kinda be nice to have a Prizm replacement for the H.I. Yellow, and I was kinda hoping the Stadium might accidentally do that. Prizm Trail is a great substitute for the Persimmon, yet no Prizm lens has been offered for the Yellow.