Sigma 28-300mm f/3.5-6.3 Aspherical IF - unknown Mount

The Sigma 28-300mm f/3.5-6.3 Aspherical IF is a versatile all-in-one zoom lens designed for full-frame SLR cameras. It covers a vast focal range from wide-angle to telephoto, utilising internal focusing to maintain a constant physical length during AF. It is built for photographers who require a single-lens solution for travel or general-purpose shooting where changing lenses is impractical. Potential buyers should examine the zoom action for 'zoom creep,' a common occurrence in high-ratio zooms of this age. SDS checks the internal lens elements for fungus and verifies that the aperture blades are snappy and free from oil. Given its complex mechanical design, we also test the focus accuracy at both ends of the zoom range to ensure alignment.