The Wreck of the Point Reyes

This is my first attempt at a multi row pano.  The image is comprised of 8 stitched captures, 4 top and 4 bottom.  Determining the correct nodal point is the trick and I am still working on it.  Each different lens has a distinct point that must be in the center of the horizontal and vertical pivots.  The files before flattening were a whopping 2.8 gigs and still ended up at over half a gig.  d800e, Zeiss- 100 f2.

Dan