How to capture a perfect Nadir
Capturing the Nadir (the area of the ground directly below the Nodal point of your lens) is probably the most challenging and time-consuming aspect of panoramic photography. It is also important to compose the Nadir properly if you want to turn your image into an interactive panorama. This post will explain some techniques you can work on in order to improve or even design the Nadir of your panoramas. If you are completely new to panoramic photography please read my previous posts: Equirectangular Panorama and HDR Panorama.
Shutter Experiments 