Press Release: We would like to announce the firmware update for the SIGMA MOUNT CONVERTER MC-11 EF-E. This firmware update allows it to be compatible with the SIGMA 135mm F1.8 DG HSM | Art (Release: April), SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary (TBD), Cine Lens 50mm T1.5 FF EF mount from FF High … Continue reading Sigma MC-11 EF-E Adapter Firmware Update