For landscapes I prefer Zeiss rendering style way more than Sigma rendering style. I think Sigma is OK, but I don't get any kicks from the rendering style - I would assume people preferring sharpness over rendering style would love this lens for landscapes.
Sigma 50mm f/1.4 DG HSM Art @ f/5.6, 1/800s, Sony A7r mkII @ ISO 100
Sigma 50mm f/1.4 DG HSM Art @ f/5.6, 1/800s, Sony A7r mkII @ ISO 100
Sigma 50mm f/1.4 DG HSM Art @ f/7.1, 1/400s, Sony A7r mkII @ ISO 100
Sigma 50mm f/1.4 DG HSM Art @ f/6.3, 1/320s, Sony A7r mkII @ ISO 100