>>3557922>it's not user error.This is user error. Major tilt on ultra wide, produces noticeable perspective distortions, especially at the corners and should never be used as sample for corner sharpness.
You intentionally picked a lousy samples to make one lens appear poor. Despicable.
Full size of picrelated if anyone wishes to pixelpeep.
https://www.flickr.com/photos/wonglp/45439736384/sizes/6k/