The Sports lens features pro grade optics and greater durability, while the Contemporary models is more compact and portable.
“Both versions of the 150-600mm F/5-6.3 DG OS HSM feature dust and splash-proof features, as well as new water and oil-repellent coating on the front and rear lenses. They boast an updated Optical Stabilizer (OS) that features an accelerometer for improved vertical and horizontal panning, essential for bird, wildlife and motor sports photography.
Two new switches were added for ease-of-use, including a new zoom lock switch capable of locking at any focal distance and a Manual Override (MO) switch for improved control of focusing performance. An enhanced auto focus (AF) algorithm and Hyper Sonic Motor ensure quiet and fast AF. The lenses are compatible with Sigma’s newly announced lineup of Global Vision teleconverters, which are effective up to F/8.”
The lenses will be available in Canon, Nikon, Sony and Sigma mounts. No word yet on pricing or availability for either model. Check them out here at B&H Photo.