Reminder for Sony mount Sigma HSM buyers.
Just a quick reminder for people looking at Sigma HSM lenses for their Sony A77/65 cameras: make sure the lens you buy has the sticker you see below, which means it has the proper firmware update to fully function on those camera bodies, otherwise, Sigma says it won’t auto focus properly. Also, if you bought an HSM lens from Sigma without that sticker, check with Sigma to see if they’ll update it. Once again, it’s only an issue with Sigma HSM lenses for the Sony A77/65. It’s been over a year now since the bulletin came out, so most, if not all stock from authorized dealers will have the updated lenses. Go here for the info page from Sigma.