If you count serious photographers among your friends, you know they switch out lenses... well, often, if not all the time. That is, if they have the luxury of time and the ability to carry a lot.
But what does an experienced photographer carry when they're on vacation, or on any other occasion where they can only carry one lens? They just might have this Sigma Photo 50-500mm lens in tow. Certainly they'd love its amazing versatility — it can capture everything from landscapes and group shots (on full-frame cameras) to the minute details of a Gothic cathedral, while delivering impressive light sensitivity for its class. And even on an APS-C camera, the effective 75-750mm focal length on most cameras in that class gives you a range from the sweet spot for portraits to super-telephoto territory.
Fast action sports at your daughter's lacrosse match? The long reach will get you the dramatic close-up from across the field. A rare, colorful finch near the top of the canopy during your woodland hike? Optical stabilization lets you bring home sharp, vibrant pictures while working hand-held because you can shoot at slower shutter speeds. And quiet, fast autofocus means you'll be at the ready for candids while traveling, even if the ideal moment is fleeting.
Careful attention to the optical build quality has yielded a lens that's sturdy, sharp across the entire frame, and free of color irregularities throughout the zoom range.