hi
hope this helps
if you download these plugins
I would make a folder then in photoshop edit>preferences> plug ins use browse to select that folder
heres some of the deformation filters free
Photoshop Plug-in Filter: Face Control (freeware) Lens Correction - Photo-Plugins
Spherical Mapping Corrector
Lens Distortion Corrector
on this page
Software Download
I also use liquify in photoshop
try them