The Sigma TC-1411 is a 1.4x teleconverter compatible with select Sigma Global Vision lenses in the SA or L-mount bayonet, extending focal length by 1.4x while reducing maximum aperture by one stop. It maintains full electronic communication for autofocus and OSS operation. The TC-1411 is part of Sigma's TC series tele-converters for the Global Vision lens lineup.
Product released: April 1, 2015
Latest firmware version
Version 1.1, released May 25, 2023
What's new in version 1.1
It is compatible with teleconverter-compatible Leica Camera AG L-mount lenses.