The dedicated 1.4x APO Teleconverter features a high performance 5 element/3 group optical design, and it is optimized for use with long telephoto and telezoom lenses.
The high performance optical characteristics of these teleconverters maintain the optical performance of the compatible lenses with which they can be used.
Sigma APO Tele Converter 1.4x and 2x are dedicated Tele Converter lenses, which should be used only with the listed lenses.
The 1.4X Convertor will fit the following lenses
180mm f/3.5 APO MACRO EX HSM - MF
300mm f/2.8 APO EX HSM - AF
300mm f/4.0 APO MACRO - MF
400mm f/5.6 APO MACRO /HSM - MF
500mm f/4.5 APO EX HSM - MF
800mm f/ 5.6 EX HSM - MF
70-200mm f/2.8 EX HSM - AF
70-210mm f/2.8 - MF
50-500mm f/4-6.3 APO - MF
100-300mm f/4 EX HSM - AF
120-300mm f/2.8 EX APO - AF
300-800mm f/5.6 EX APO - MF
Will also fit the following Orginal Canon EF Lenses
200mm f2.8L USM - AF
300mm f2.8L USM - AF
300mm f4.0L IS - MF
400mm f2.8L USM - AF
400mm f5.6L USM - MF
500mm f4.5L USM - MF
600mm f/4L - MF
70-200mm f2.8L USM - AF
On the lists, the lenses marked "AF" will retain auto focus operation when used with a Tele Converter. The lenses marked "MF can only be used for manual focus.
Please refer to the manufacturers Teleconverer Matching List for an updated compatability chart.
Reviewed by 3 customers
Very hsppy with the added range and output of the units
Sigma tele-converter will mount up with my canon lens. But it will not mount up to my Sigma 17-70 2.8 lens.Be wear! It has its good range and bad range.Mostly good.
Very Nice output for the price