Opticallimits

For those who use Sigma glass in front of a Canon:

 

I just was on Sigma's website, since "Sigma-rumors" fell into pre-winter sleep.

 

For all Canon users, Sigma owners: Please check your lenses for updates:

http://www.sigma-global.com/download/en/information.html 

 

Some of them come for the MC-11 adaptor, others just to improve focus accuracy. 8 different lenses can get updated (last 3 months)