Now this comparison isn't scientific by no means, maybe I will revisit this with some more controlled shots using the same body on a tripod to try and ensure the exact same angle.
Rather these images are simply how I would use these lenses shooting the same scene in the real world. I did try and frame/compose them in a similar manner.
the Batis has the benefit of being mounted on the A7R II while the lowly Sony 28mm was mounted on the A7S so there is a resolution difference in the camera sensors giving the Batis a
advantage however I just love the file from the A7S, in fact when I am using the 55mm Zeiss f/1.8 I prefer how it renders on the A7S body, it sorta has a medium format feel to its output.
1st up, shot with the A7R II and 25mm Batis:
2nd up, shot with the A7S and 28mm Sony: