Sigma TC-2001 2x Teleconverter Mount:for Canon EF which provides quick and especially

which provides quick and especially quiet focusing performance

and the asset of a removable

Compatible with select Sony cameras featuring Bluetooth connectivity

along with dual memory card slots

Sigma TC-2001 2x Teleconverter Mount:for Canon EF which provides quick and especiallyOptimized for Canon EF mount lenses in the Global Vision line, the TC 2001 2x Teleconverter from Sigma will offer an increase in focal length of 2 times for select Global Vision lenses. This model offers full communication between the lens and camera and will allows autofocus to operate at up to f 8. The teleconverter also features two Special Low Dispersion elements for reducing the appearance of chromatic aberrations and maintaining quality.