The Model A035 delivers fast and precise autofocus performance and consistently powerful VC (Vibration Compensation) benefits thanks to the high-speed Dual MPU (Micro-Processing Unit) control system that is found in the latest Tamron lens models. Model A035 is fully compatible with Tamron’s 1.4X teleconverter and the Tamron TAP-in ConsoleTM that enables lens customizations for focus adjustments, VC mechanism adjustments and more. Additionally, an Arca Swiss compatible tripod mount is available as an optional accessory. This combination of features and optional accessories join to create a lens that photographers everywhere will enjoy using in various shooting situations, including low-light conditions that require handheld operation as well as those where convenient attachment to a tripod is preferred. PRODUCT HIGHLIGHTS  3 LD (Low Dispersion) lens elements effectively compensate for axial chromatic aberrations, a potential issue for ultra-telephoto lenses, and other various aberrations eBAND (Extended Bandwidth & Angular-Dependency) Coating, with superior anti-reflection performance to eliminate flare and ghosting, provides flawless, crystal clear images  High-speed Dual MPU (Micro-Processing Unit) control system delivers quick and highly responsive autofocus performance and outstanding vibration compensation Lightest weight (39.3 oz.) lens in the ultra-telephoto zoom lens category Optional accessory tripod mount is Arca Swiss-compatible MOD (Minimum Object Distance) of 59” and maximum magnification ratio of 1:3.6 Moisture-Resistant Construction and Fluorine Coating for weather protection Fully compatible with 1.4X teleconverter and TAP-in ConsoleTM