When making panoramas we have to do the same thing with the
lens and its position on the tripod. There is one and only one
position that allows you to pivot the camera and lens around on the
ball head and have no parallax. That is the nodal point. You can
read more about finding the nodal point on any lens on the Internet.
There are many tutorials.
If you attempt to stitch multiple rows together without having found
the correct nodal point there will be an jog or offset when the rows
are stitched together that is visible. You only need the nodal point
for a given lens once, write it down, and use that position on your
gear from then on.
[Note: This photo is also a panorama but now we have restricted
the view to what we might call close-up range. I call these mini-
landscapes. This panorama is focus stacked, so that each section
is individually stacked and the resulting pieces are stitched together
to create the finished panorama. Notice how we have essentially a
wide-angle photo but one with very great detail (if we could zoom in
or show this image at its true size). While I could have taken this
shot with a wide-angle lens, the detail would not be there. It does
not matter so much whether we can see that detail in ‘detail’