Sigma Corporation would like to announce that there are two types of new tele converters to be released on October 24th, 2014. Please note that the SIGMA 120-300mm F2.8 DG OS HSM | Sports requires an update to the firmware to make it compatible with the SIGMA TELE CONVERTER TC-1401 and SIGMA TELE CONVERTER TC-2001.

For those who own the SIGMA 120-300mm F2.8 DG OS HSM | Sports and considering using it with either the SIGMA TELE CONVERTER TC-1401 or SIGMA TELE CONVERTER TC-2001, please follow the steps below to update the firmware of the lens.

Please be advised that the updated version of firmware will make it compatible with the new tele converters, however it will also make it incompatible with conventional APO TELE CONVERTER 1.4x EX DG and APO TELE CONVERTER 2x EX DG. For further information, please contact your nearest authorized subsidiary / distributor of SIGMA.

For customers who own the SIGMA USB DOCK
Please start up the SIGMA Optimization Pro software and update the firmware of the SIGMA USB DOCK.
There will be the optimized firmware compatible with the new tele converters (Sigma: Ver. 1.01, Nikon: Ver. 1.02, Canon: Ver. 1.03), currently scheduled for release on October 24th.


For customers who do not own SIGMA USB DOCK
We are going to start the service for update on October 27th.
Please contact your nearest authorized subsidiary / distributor of SIGMA for the further details.

Compatibility table for SIGMA TELE CONVERTER TC-1401 and TC-2001

SIGMA TELE CONVERTER TC-1401 
 
SIGMA TELE CONVERTER TC-2001 
 
 
* Apart from the lenses in the table, new tele converters are not compatible.
*1 It becomes compatible with the new tele converters once the lens firmware is updated to Ver. 1.01 or later.
*2 It becomes compatible with the new tele converters once the lens firmware is updated to Ver. 1.02 or later.
*3 It becomes compatible with the new tele converters once the lens firmware is updated to Ver. 1.03 or later.
*4 When SIGMA TELE CONVERTER TC-1401 is attached to cameras that are compatible with AF at F8, it is possible to shoot with AF. In cases where contrast or brightness level of the shooting object is low, it may not focus properly.


For the details of the new tele converters;
http://www.sigma-global.com/en/lenses/cas/product/accessories/tele-converter/