The Sigma 70-200mm F2.8 EX DG OS HSM
For pros, students and serious enthusiasts, a fast, constant F2.8 aperture telephoto zoom is an absolute must-have lens. And the Sigma 70-200mm F2.8 EX DG OS HSM is a rock-solid workhorse of a lens for weddings, photojournalism, sports and wildlife action, studio, and editorial photography. With a fast, constant aperture of F2.8 you can be ready to shoot in low light environments or in fast moving situations where a high shutter speed is necessary. And Optical Stabilizer allows for sharp handheld shots at slower shutter speeds— without a tripod. Nine rounded aperture blades adds a very pleasing feel to the background blur.