Sun Oct 07, 2012 12:58 pm
To my understanding "L glass" means that these lenses have 2 major features:
- cover full frame (not needed)
- constant aperature over the whole zoom range
(- eventually additional weather-sealing)
It does not have anything to do with sharpness, vignetting, etc.
I have already stocked up on a Sigma 8-16mm. =)
Cheers