I learned this one last week and was wondering what other tricks people have learned through the years. I recently acquired a 14mm samyang rectilinear for use with my stabilizer. By bringing it into photoshop as a smart object we can correct for the distortion of the lens. I'm guessing in use I'll probably have to have the subject in the center of the frame, but I need to test it out. For instruction on the samyang use google translate:
photo-worX.de - Fotoecke -> Bastell Ecke -> Adobe Lens Profile - Samyang 14mm f2.8 ED AS IF UMC (http://www.photo-worx.de/index.php?option=com_content&task=view&id=49&Itemid=)

14 mm video (http://fiskephotography.smugmug.com/Other/video/12767805_Asnqn#1224552190_dZLBs-A-LB)



http://fiskephotography.smugmug.com/photos/1224548056_62WFo-L.jpg