Sigma UD 01SO USB dock for Sony A lens bayonet

For use with Sigma's Global Vision lenses Update lens firmware so your lens is never "out of date" Adjust focus position to match your camera for precise auto focusing Customise features including autofocus speed and focus limiter distances on Sigma's "Sport" lenses International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.