This is the Canon 50mm lens you have been waiting for. Find out which is better and their overall performance in the Canon camera lens ranking. The build quality of the Canon RF 50mm f/1.2 USM L is exceptional. Consequently, it has the Canon RF lens mount that has a diameter of 54mm and a flange depth of 20mm. The f/1.2s are special but these giant lenses are too big and heavy to carry around on a regular basis. What is the difference between Canon RF 50mm f/1.2L USM and Canon RF 85mm f/1.2L USM? When introducing the Canon EOS R and the RF mount, Canon's first full-frame lens mount introduced since the EF (electronic focusing) mount was introduced over 30 years ago, Canon primed the pump with some knock-out lenses and the RF 50mm F1.2 L USM Lens was one of them. As part of Canon’s L series, it is designed for professional photographers who want a bright standard prime lens. Out of the lab and for real-life picture taking the Canon EF 50mm f/1.2L and EF to RF adapter combination work great, with just-as-fast focusing and just-as-accurate autofocus at f/1.2. Canon RF 50mm f/1.2L USM. The reason to get this RF lens is mostly for astronomers and others who are going to look in the corners with microscopes of scientific subjects at f/1.2. The Canon RF 50mm F1.2 L USM ($2,299) is a seriously good prime lens for photographers with serious budgets. I think people need to have more realistic expectations when it comes to lenses at f/1.2 or f/1.4. There is, however, an inner lens tube that moves during focusing. The other great lens release recently is the 40mm f/1.4 Art. It features a weather-resistant design that protects against dust and moisture. Unlike the 70-200mm f/2.8, the 100-500mm is compatible with Canon’s 1.4x and 2x RF ‘Extenders’ (tele-converters), but the aperture rating drops by a further one or two f/stops respectively. A lot of the data and reviews look simply spectacular - it might be a great lens for mosaics, better than the 35mm or 50mm arts or 35mm L II. The Canon RF 50mm f/1.2L USM features a bright f/1.2 maximum aperture, a ring-type UltraSonic Motor (USM) AF system more usually found in Canon’s super telephoto lenses which delivers fast, near-silent autofocusing, 10 rounded diaphragm blades for smoother … It gives both photographers and filmmakers the ability to shoot with extremely shallow depth of field – a great way to emphasise a subject against a complicated background. Engineered expressly for Canon's EOS R system, it has a large 54mm diameter, an extremely bright f/1.2 aperture and can focus as close as 1.31 ft./0.40m for excellent operation from almost any distance. The body is made of a combination of metal and high-quality plastic parts based on a metal mount. The RF 50mm F1.2 L USM lens delivers a remarkable level of image quality and superlative performance in an elegant design. The RF 50mm f/1.2L is a little longer than Sigma’s 50mm f/1.4 Art and the same length as Sony’s 50mm f/1.4 ZA, though the Canon is a bit heavier than both. Kudos to Canon for pushing lens design to dizzying heights, but I just want an excellent set of small modest primes for the RF: f/1.4 to f/1.8 is fine, and a 20mm f/2.8. While wide-aperture 50mm prime lenses have long been favorites … The f/1.2 maximum aperture of the RF 50mm F1.2L USM is the widest available in the Canon EOS line-up. Canon announced the RF 50mm f/1.2L USM at the same time as the EOS R, its first full-frame mirrorless camera. The RF 50mm f/1.2L USM is a very fast standard prime lens for Canon's new EOS R full-frame mirrorless camera system.