savoldellim6 years ago000Can this lens be used with the Canon 1.4 and 2.0 III converters?Show in original language (German)rolfzimmermann6 years ago000Canon only refers to its own glass: http://gdlp01.c-wss.com/gds... Sigma teleconverters (TC-1401, TC-2001) support the lens: https://www.sigmaphoto.com/lenses...Show in original language (German)Comment1 comment