Sony 70-400mm review: one of the sharpest super-zooms for wild life photographyBy Kevin Carter - Tuesday May 07 2013 Lens Review
Sony 70-400mm F4-5.6 G SSM II mounted on Sony A900 Vs Sigma 120-400mm F4.5-5.6 DG APO OS HSM Canon mounted on Canon EOS 5D Mark III Vs Sony 70-300mm F4.5-5.6 G SSM mounted on Sony A900
Although we haven’t been able to test the earlier version of the Sony 70-400mm, the new lens out-performs the firm’s current 70-300mm f/4.5-5.6 G SSM, and that’s not just at one end of the range, as you might expect but at each focal length.
The Sony 70-400mm also compares favorably to the Sigma though that lens and camera combination has even better uniformity of sharpness than the Sony. It’s also much more accessibly priced and has built-in stabilization (an added cost during the design and manufacturing processes, even if the Sony SLT cameras have it built into the body).