Sigma TC-2011 Teleconverter

First Leaked Images of Sigma 100-400mm f/5-6.3 DG DN OS Lens, 2X TC-2011 teleconverter and Sigma USB dock UD-11

Here are the first leaked images of the Sigma 100-400mm f/5-6.3 DG DN OS Lens (for L-mount and E-mount), 2X