The moderately strong barrel distortion of the Sigma FE 35mm f/2 DG DN can be ignored for many scenes, including ones like this. But often a landscape scene includes a horizon. Similarly, architecture and human-made structures often have straight lines.
This landscape scene is used to evaluate how much sharpness and micro contrast are lost in using distortion correction for the barrel distortion of the Sigma FE 35mm f/2 DG DN.
In my review of the Sigma FE 35mm f/2 DG DN Contemporary:
Includes images up to full camera resolution both uncorrected and corrected, along with crops and discussion.