Check out some comparison crops, and the full size versions too of the Rokinon 24mm F/1.4 which I'm currently reviewing. The relatively inexpensive Rokinon is not to bad in resolution in the centers and corners, but contrast is lacking, as is quality control, see the bottom of the comp for more info.
I reviewed the Zeiss Touit lenses for Sony APS-C sensor cameras a few years ago, and they were excellent in quality and design, although the focusing motors were rather loud with questionable accuracy and speed. Thankfully, the Zeiss Batis series uses a very quiet and fast linear focusing system (just like better Sony lenses), so you video shooters will not be bothered by focus motor noise. So does that make the Zeiss Batis 25mm F/2 a better performer?
For landscape users the Zeiss 25mm F/2 is almost perfect; technical image quality at F/2 is about as good as it gets, unless