The 18-55 kit lens from Sony is not a wonder-lens.
I have seen some that where worse. Look how good it
is in center and at corners, at 18 and 55 it has soft edges
while at 25 mm up to 35 mm it is sharper,
as we will see on next shot. Look also the high amount
of aberration, mainly blue fringing on the edges.
I made no CA correction to show this here.
See all those test shots in original size to get an idea.
The panorama shots are cropped top and bottom only.