It strikes me that the last several lens releases showed some pretty serious step up on IQ. I know that the latest release is always "the best we have ever done.." (who really ever goes backwards) but are we seeing some sort of overall step up? Did something get figured out in glass 2-3 years ago?

Quote Originally Posted by Nessimelle View Post
The new Sigma will be interesting, maybe even better than the Canon and Nikon equivalent (just looking at the MTF values though): http://www.lensrentals.com/blog/2012...der#more-10609