The Canon TS - E 17mm f/4L Tilt - Shift Lens is a high - performance lens designed for professional photographers. It features a focal length of 17mm and a maximum aperture of f/4, providing exceptional image quality and versatility. With a diagonal angle of view of 104°, this lens allows for significant creative control through its tilt and shift capabilities, offering up to +/ - 6.5° of tilt and +/ - 12mm of shift. The lens is constructed with 18 elements in 12 groups, including UD glass to minimize chromatic aberrations and a specially coated aspherical element for glare - free images. The tilt - shift mechanism can be rotated +/ - 90° for flexible movement in any direction, and a tilt - locking mechanism ensures stability during shooting. This lens is compatible with Canon EF mount cameras and is perfect for capturing stunning architectural details and expansive landscapes.