You need to make sure you get the sigma lens for the Sony/Minolta mount. There's a stickyin the sony section about "Will that lens fit my alpha". The, if you go to the Sigma website, you can see what lens mounts they manufacture for. Also, you could have gone to www.dyxum.com and looked up the lens. Finally, if you had googled "Sigma 30mm f/1.4 Sony" you would have found your answer too.
