Sigma TC-2001 2x Teleconverter
Magnification of focal length of 2.0x
Auto focus is effective up to F8
Its durable construction is both dust and splash proof.
Lens Construction 10 Elements in 5 Groups
Shooting Range and Shooting Ratio 2.0 times the magnification of the original lens
(Diameter x Length) 69.8×48.90mm/ 2.7×1.9in
Weight 290g/ 10.2oz
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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. Additionally, for protection, the TC-2001 is both dust and splashproof. When attached, the 2x conversion results in a light loss of approximately two stops. A soft zippered carrying case is included to protect the teleconverter when not in use.