Telephoto lenses tend to be expensive and heavy, but in recent years, third party manufacturers have provided some very tempting alternatives. The Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Lens is one of those alternatives, and today only, you can get it for $200 off along with a free UV filter and expedited shipping.
The Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary is a telephoto lens with a very useful focal length range and a compact and lightweight design compared to its competitors, making it especially appealing if packing light is important to you. It's also priced very competitively compared to its peers, and today only, B&H is offering it for $200 off, bringing the price to just $599. Features include four SLD glass elements to reduce aberrations, super multi-layer coating to increase contrast, a hypersonic AF motor, optical stabilization, a rounded nine-blade diaphragm, thermally stable composite housing, and compatibility with Sigma's USB dock. It's definitely a pleasing alternative to heavier and more expensive glass, and if you're looking to add a telephoto lens to your kit, I recommend taking a look. You can pick up yours here.