Sure you can use Panoweaver to produce the fullscreen versions. The quality will come from camera and lens (along with knowledge) but there are many here to help with that part.
Not possible with Panoweaver and 50mm
To use Panoweaver you need to use a fisheye lens like a Nikkor 10.5. This will requre 6 images around +1 UP zenith and +1 DOWN Nadir image total 8. OR
Sigma 8mm f/3.5 with a Nikon Mount. 4 images around optional +2 1up/1down
See also discussion: