Could i ask what you mean by this?
There's a tad bit of horizontal tilt and notice the slight bulge in the middle? The first distortion (tilt) is a function of getting the focal plane square with the subject and architecture shows this defect more than a portrait would. The second distortion is due to using a wide angle lens. Both of these issues can be fixed with lens correction tool in CS4 and 5 and other imaging tools.





