Tamron AF 28-200mm f/3.8-5.6 LD Aspherical (71D/171D) - unknown Mount

The Tamron AF 28-200mm f/3.8-5.6 LD Aspherical was a pioneer in the 'superzoom' category, offering a massive 7.1x zoom range in a single compact unit. Designed for full-frame film and digital SLRs, it utilises Aspherical elements and Low Dispersion (LD) glass to maintain image quality across the zoom range while keeping the lens size manageable. It is an ideal travel lens, reducing the need for frequent lens changes in dusty or fast-moving environments. When buying used, pay close attention to the zoom mechanism; these lenses have complex internal cam structures that can wear, leading to stiff spots or excessive wobble when fully extended. The autofocus is driven by the camera body (in most mounts), so check the drive screw for wear. SDS performs checks for internal haze and ensures the zoom lock (if present on that specific sub-version) functions correctly to prevent creep.