The Sigma Art series is well known for its image quality. DXOmark.com now scored the Sigma 50mm F1.4 DG HSM A Canon on the Canon 5Ds R with a score of 44. On one of Canon’s work horses the Canon 5D Mark IV the Sigma lens received an overall score of 39. Beside that, the Sigma 85mm F1.4 EX DG HSM Nikon got even a Score of 50. That is the highest Score on DXOMark until today. The Sigma score for Canon just get beaten by the Carl Zeiss Distagon T* Otus 1.4/55 ZE Canon. The Carl Zeiss Distagon T* Otus 1.4/55 ZE Canon costs 4 times more than the Sigma one.