Sigma 17-50mm f/2.8 EX DC OS HSM Zoom Lens for Canon w/A{S-C Sensor #583101 + 77mm 3 Piece Filter Kit + Lens Pen Cleaner + Fibercloth + Lens Capkeeper + Deluxe Cleaning Kit + Flexible Tripod Bundle

well howdy everyone my name's Chris and today I'm looking at the Sigma 17 250 millimeter F 2.8 OS hsm lens this is a vast standard zoom lens for aps-c cameras only which means pretty much any digital SLR that costs under a thousand pounds and it's especially popular because it has image stabilization fast standard zoom lenses are great and a lot of professional photographers have them they have about the same focal length as your typical Canon 18 to 55 millimeter kit lens so wide-angle to short telephoto but they have a fast maximum aperture of f28 which makes all our different an F 2.8 aperture let's in almost twice as much light as your typical Kitts lens at its widest angle and four times as much light when you're zoomed in to a 50 millimeter this extra light is really special it lets you take more pictures indoors and get faster shutter speeds for sharper pictures having more light