Originally posted by SpecialK Yes. That is normal perspective. If you "fix" it as others imply, you can make it look unnatural. If you make a tall building perfectly parallel, your mind thinks it is expanding.
This is true. I use Capture One 6 as my raw processor. It has the best and easiest keystone correction tool that I have ever used, and that includes DxO, PTLens and PS. Of note, C1 only corrects converging lines by 80% rather than 100%, as this appears more natural to our eyes.
Regarding leaving room on the edges for cropping, one might as well be using a shorter lens. It does somewhat defeat the purpose of using a wide angle lens.
Rob