Forgive me if this has been addressed, but after 20 min of searching, I thought I'd post. Does anyone know if there any 3rd party wide angle fixed or zoom (e.g. 12-24) lenses compatible with the Nikkor AF-S type lenses? I am just beginning to realize how limited the options are for us D40x owners.... I read good things about the Tamron 12-24, but it seems like it is incompatible with my camera body.