I'm in a pickle, where I can't decide which type of low focal range lens I want to get next. I'm seeing a lot of amazing pictures done with Fisheyes, and a lot done with Super-Wides. I have 2 in mind right now, the Tokina 12-24mm F/4 which is the most highly recommended super-wide out there, for those that can't sport the Nikon offerings price. $500 vs $1100. And for fisheyes I've been looking at the Tokina 10-17mm F3.5-4.5... There is only one problem with the 10-17mm Tokina, that is excessive CA, but is correctable if shooting in raw, and edited. I do have an understanding though that a fisheye is a very limited use lens, and probably isn't worth the money if I won't use it much. Right now the only lenses I have are the ones in my sig. I primarily use the 35mm F/2D because it's my standard (as anyone Nikon user should know the crop factor on a Nikon DSLR other than the new full frame, is 1.5x because of the APS-C sensor so 35mm x 1.5 FOV crop = 52mm effective focal length) So that would make the Tokina 12-24mm really 18-36, which is still super-wide. I've been thinking about also selling the 18-135 for a 18-200mm VR for a better all arounder. So many lenses, so little money. What do you all think?