The Canon EF 50mm f/1.4 USM lens is a standard prime lens designed for use with Canon EOS DSLR cameras. It offers a fast maximum aperture of f/1.4, which allows for excellent low-light performance and shallow depth of field control.

The lens features a ring-type Ultrasonic Motor (USM) for fast and accurate autofocus, as well as full-time manual focus override. This makes it a great choice for shooting portraits, weddings, street photography, and other types of photography where fast and accurate autofocus is important.

The lens is constructed with 7 elements in 6 groups, including two high-refraction lens elements and a Gaussian optics design, which helps to minimize distortion and produce sharp, high-contrast images even at maximum aperture. The minimum focus distance of the lens is 0.45m, and it has a maximum magnification of 0.15x, making it suitable for close-up shots as well.

Overall, the Canon EF 50mm f/1.4 USM lens is a versatile and high-quality option for Canon DSLR users who want a fast prime lens with excellent optical performance and fast autofocus capabilities. It's a popular choice among photographers for its excellent image quality, portability, and affordability.

Benefits

Standard prime lens suited to general-purpose photography from landscape to portrait
Compact and lightweight this lens can be taken anywhere
The in-built Ultra-Sonic Motor (USM) drives fast and quiet Auto Focus with optional full manual override
Reduce ghosting and flare with Super Spectra coatings
A circular 8-bladed aperture diaphragm gives out-of-focus regions a softer, more uniform feel
Weighing in at just 290 g and measuring at 73.8 x 50.5 mm
Compatible with all Canon DSLR cameras and EOS-M mirrorless cameras with an EF-EOS M Mount adapter

Compatible with all Canon DSLR cameras and EOS-M mirrorless cameras with an EF-EOS M Mount adapter

EF 50mm f/1.4 USM Lens