The Tamron 28-300mm f/3.5-6.3 Di PZD Lens for Sony is a wide-angle to telephoto zoom lens for Sony A-mount full-frame and APS-C cameras. It provides users with an extremely versatile all-purpose lens in a compact design and on APS-C cameras it has a zoom range equivalent of 42-450mm. Also, it has an aperture range from f/3.5-6.3 to f/22-40 across the zoom range.