Category Review: Sigma 70-200mm f/2.8 DG OS HSM Sports Lens for Canon EF + Sigma USB Dock with Altura Photo Advanced Accessory and Travel Bundle Sigma is a well-known brand in the photography industry, known for its high-quality lenses that are designed to meet the needs of professional photographers. The 70-200mm f/2.8 DG OS HSM Sports Lens for Canon EF + Sigma USB Dock with Altura Photo Advanced Accessory and Travel Bundle is one such lens that has gained a lot of popularity among photographers due to its exceptional performance, durability, and versatility. The 70-200mm f/2.8 DG OS HSM Sports Lens for Canon EF + Sigma USB Dock with Altura Photo Advanced Accessory and Travel Bundle is a telephoto zoom lens that is designed to capture high-quality images of fast-moving subjects such as sports, wildlife, and action scenes. The lens has an f/2.8 aperture, which allows for shallow depth of field and excellent low light performance. It also features optical stabilization (OS) technology, which helps to reduce camera shake and improve image stability, making it ideal for handheld shooting. The Sigma USB Dock with Altura Photo Advanced Accessory and Travel Bundle is a great addition to this lens as it allows photographers to easily update the firmware of their lenses and customize settings such as autofocus and white balance. The bundle also includes an advanced accessory kit that includes a cleaning kit, padded lens case, and four protective pouches for DSLR camera lenses. One of the key features of this lens is its durability and weather resistance. It has a rugged construction that can withstand harsh conditions such as rain, snow, and extreme temperatures. The lens also features a moisture-resistant coating on its exterior to prevent water from seeping into the lens. In terms of performance, the 70-200mm f/2.8 DG OS HSM Sports Lens for Canon EF + Sigma USB Dock with Altura Photo Advanced Accessory and Travel Bundle is exceptional. It produces sharp images with excellent color accuracy and contrast, even at high ISO settings. The lens also has a fast autofocus system that allows photographers to capture moving subjects quickly and accurately. Overall, the 70-200mm f/2.8 DG OS HSM Sports Lens for Canon EF + Sigma USB Dock with Altura Photo Advanced Accessory and Travel Bundle is an excellent choice for professional photographers who need a high-quality telephoto zoom lens that can capture fast-moving subjects in low light conditions.