The RX-1 doesn’t have the chromatic aberration that afflicts the Zeiss 24mm f/1.8 on the NEX-7. Look here for NEX-7 pictures.
Here’s a scene with high-contrast corners (tree branches against sky) with the RX-1 wide open, with Lightroom lens corrections turned off, but in-camera chromatic aberration correction turned on:
Here’s what the branches look like up close:
And here’s a similar detail from an image made at f/6.3, which makes the corners sharper:
While this is pretty darned impressive, we should remember that chromatic aberration isn’t much of a problem now that it’s so easy to correct in post.