The enormous light intensity of 1:1.2 of the RF 50mm f/1.2L USM is the highest value in the entire EOS lineup. This allows both photographers and videographers to work with an extremely shallow depth of field - an ideal way to highlight subjects against a busy background. Thanks to the lens's incredible light intensity, shorter exposure times can be used in low light, freezing subject movement and reducing motion blur. The RF 50mm f/1.2L USM is perfect for capturing the natural atmosphere in ambient light. The ring USM autofocus system, typically found in Canon's super telephoto lenses, effortlessly moves the large glass elements of the RF 50mm f/1.2L USM. Focusing is quick and precise, ensuring that even moving subjects can be captured reliably. The RF 50mm f/1.2L USM is part of Canon's professional L series and is protected against dust and splashes. The individually configurable lens control ring provides direct access to camera functions, allowing for intuitive operation.