The EF 50mm f/1.8 II Lens, the EF 50mm f/1.4 USM Standard & Medium Telephoto Lens, the Canon EF 24-70mm f/2.8L II USM Standard Zoom Lens, and the Canon EF-S 17-55mm f/2.8 IS USM Lens are some of the most popular Canon lenses. The 24-70mm f/2.8L and the 17-55mm f/2.8 are general purpose lenses and can be used for taking any types of photos.
The 50mm f/1.8 (focal ratio of 1.4) II and the 50mm f/1.4 have a focal length of 50mm with 80mm equivalent focal length on Canon APS-C cameras. They come with a maximum aperture of F1.8 and a minimum aperture of F22. These cameras have non-zoomable lenses. The 50mm f/1.8 II has a Micrometer-type AF motor and the 50mm f/1.4 has an Ultrasonic-type auto focus motor with full-time manual focusing.
The 50mm f/1.4 has 58mm filters and 0.45m/17.72" minimum focus. It also comes with Super Multi-Layer Coating which minimizes lens flare and ghosting.
The 24-70mm f/2.8L II has a focal length varying from 24-70mm. The camera has two spherical and two ultra-low dispersion lens elements and supports Fast Ultrasonic Auto Focus. It has a minimum aperture of F22 and supports Macro mode for up to 0.7x magnification. It has a ring ultrasonic motor for an auto focus actuator.
The 17-55mm f/2.8 is a wide-angle zoom lens with a maximum focal ratio of 2.8, when used in Canon DSLR cameras. Its Image Stabilizer lens groups shift to compensate for image shake even in dim lighting.