Known Issue ID: 15911

Issue Summary:

The following Sigma Art lens firmware revisions are NOT supported: Sigma 20mm f1.4 DG HSM Art: firmware v2.0, v2.01; Sigma 12-24mm f4 DG HSM Art: firmware v2.01; Sigma 24mm f1.4 DG HSM Art: firmware v2.01.

Found in Firmware Version:

7.0.4

Target Firmware Fix:

Investigating

Workaround:

None