Why isnt this a "L" Lens?
It has all the bells and whistles of L series, but the ring is green not red, that's all
Canon tried painting a red ring over the green one, but it came out black. They tried painting the red ring next to the green one, but decided people might only buy it at Christmas. So they just stuck with the green ring.
When I was a kid my sisters nail polish would have fixed the ring problem right up.
Besides if it was an L lens it would be $2000 more than it is. "L" means "Lots of Money" (I am probably wrong on that, however I arrived at that conclusion from experience and I challenge anyone to dispute my findings)
I have red pin-striping tape for all of my lenses..even my Zeiss and Sigma......