Sony A65 with Quantaray 70-300mm Photos

Just bought the A65 body, and using my brother's Quantaray 70-300mm took some pics at a street festival in Niagara Falls, Canada. The photos were re-sized quite a bit. Has anyone used the Quantaray?

oops...looks like I focused on the crowd behind.

--

E.T.'s previous cameras: Sony P150, Sony W1, Sony V3, Sony F828, Sony H1, Sony R1, Canon Rebel XT, Olympus E300, Canon T1i, Canon T2i, Sony Nex 3, Sony TX10, Sony Nex-5N.
Now: Sony A65