Ultra wideangle lenses are perfect for travel and landscape photography, or any application in which you need to capture an expansive scene. Unlike fisheye lenses, which curve images, ultra wideangle lenses render straight lines in the subject as straight lines in the photograph. Another interesting feature of an ultra wideangle lens is its ability to exaggerate the size of subjects close to the lens. By stretching out the apparent space between foreground and background, an ultra wideangle lens creates a striking impression of three-dimensionality. This lens has an exceptionally wide angle of view and outstanding image quality. Center-to-edge sharpness is superb, with excellent control of distortion and aberration. Aspherical lens and rear-focusing system ensures superior optical performance. Fast f/2.8 maximum aperture with ultra-wide angle of view. Compact and lightweight for easy handling. Accepts 77mm filters; HB-8 lens hood.