Canon 17mm TSE. The Big Image Circle.
Getting a view of tall buildings from a close view point and still getting a sense of scale and space can be difficult if there is no more space to get back from.
If you are familiar with Canon TSE lenses you will know that they have a large image circle-the coverage circle of the projected image onto the camera sensor. By utilising as much of this circle a composite image can be created to give an increased field of view without a 'wide' distorted look to the picture.
By taking a series of images and rotating the lens through it's maximum shift parameters then stitching them all together using Adobe Photoshop or PTGui creates a wide view without a distorted look.