Sturdy Workhorse, or One Trick Pony? Sigma 28-70mm f2.8 Review

The 24-70mm f2.8 lens is a workhorse lens -- but it's a bit of a Clydesdale. The zoom mixed with the bright aperture tends to create a heavy lens that's difficult to carry around all day. That's why Sigma (gasp!) shaved four mm off the traditional workhorse wide-to-mid to craft the Sigma 28-70mm f2.8. The Sigma 28-70mm f2.8 DG DN Contemporary is nearly half the weight of the Sony G Master and even Sigma's own 24-70mm Art series lens. At 16.6 ounces and $900, the E-Mount lens has several advantag...