Designed for Canon SLR cameras.
Designed for Canon SLR cameras, the highly portable Canon EF 28mm f/2.8 wide-angle lens offers a terrific price-to-performance ratio. The lens offers a fast f/2.8 aperture that makes it easy to use in low light, providing a bright viewfinder image in the camera. The lens also focuses as close as 10 inches without accessories. And optically, it provides excellent edge-to-edge contrast and sharpness while correcting for linear distortion, ensuring that straight lines in a photographic subject--such as architecture--remain straight. Other features include a 75-degree diagonal angle of view, a 52mm filter diameter, and a one-year warranty.
Specifications

Focal length: 28mm
Maximum aperture: f/2.8
Lens construction: 5 elements in 5 groups
Diagonal angle of view: 75 degrees
Focus adjustment: Overall linear extension system with AFD
Close focusing distance: 1 foot
Filter size: 52mm
Corresponding mounts: Canon
Dimensions: 2.7 inches in diameter and 1.7 inches long
Weight: 6.5 ounces
Warranty: 1 year Highly portable wide-angle lens with a good price-to-performance ratio. Its light weight of 6.5 oz. (185g) makes it ideal as your standard wide-angle lens. The high-precision aspherical lens minimizes distortion and other aberrations for sharp and high-contrast images. The most affordable fixed focal length wide-angle lens in the Canon EF line-up continues to give benefits difficult or impossible to find with zooms. The fast f/2.8 aperture makes it easy to use in low light, and provides a bright viewfinder image in the camera. It focuses as close as 10 inches/0.25m without accessories. And optically, it provides excellent edge-to-edge contrast and sharpness along with superior correction of linear distortion, so straight lines in a subject (such as architecture) remain straight.
Wide and Fast
If you need an ultra-wide angle and a large aperture, one of the following lenses will fit the bill. Ultra-wide-angle lenses can capture scenes beyond your natural field of vision. The EF 15mm f/2.8 Fisheye, the widest of them all, has a 180∞ angle of view. For more normal-looking wide-angle shots, there are longer wide-angle lenses up to 35mm with the maximum aperture you need. Designed for Canon SLR cameras, the highly portable Canon EF 28mm f/2.8 wide-angle lens offers a terrific price-to-performance ratio. The lens offers a fast f/2.8 aperture that makes it easy to use in low light, providing a bright viewfinder image in the camera. The lens also focuses as close as 10 inches without accessories. And optically, it provides excellent edge-to-edge contrast and sharpness while correcting for linear distortion, ensuring that straight lines in a photographic subject--such as architecture--remain straight. Other features include a 75-degree diagonal angle of view, a 52mm filter diameter, and a one-year warranty.