Sigma APO Teleconverter 2x EX DG
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Product Code: APO Teleconverter 2x EX DG
The Sigma APO Teleconverter 1.4x EX DG is used to multiply the focal length of the existing lens by 2x, and will increase the f/stop too. For example, using a 2x teleconverter with a 200mm lens will effectively increase the focal length to 400mm. A l...