Canon RF 45mm f/1.2 STM

Canon RF 45mm f/1.2 STM is a prime lens for Canon EOS R mirrorless cameras with RF mount, designed for portrait photography, street photography, reportage, everyday content, and available-light shooting. The 45 mm focal length provides a slightly wider perspective than a classic 50 mm lens, while maintaining a natural and versatile angle of view on full-frame format; on APS-C EOS R bodies it provides an equivalent framing of approximately 72 mm. The f/1.2 maximum aperture allows working with shallow depth of field and in limited lighting conditions, while the minimum aperture reaches f/16. The optical design consists of 9 elements in 7 groups and includes one aspherical element, with Super Spectra Coating to help control reflections and contrast loss. The autofocus system uses a gear-type STM motor, with full-time manual focusing available, a minimum focusing distance of 0.45 m, and a maximum magnification ratio of 0.13x. The lens integrates a clicked control ring, manual focus ring, and AF/MF switch, but does not include optical stabilization, weather-resistant construction, an iris ring, or a lens function button. The 9-blade diaphragm, 67 mm filter thread, metal mount, and weight of approximately 346 g make it a bright yet relatively compact option for the Canon RF system. Canon RF 45mm f/1.2 STM is suitable for users looking for a very fast standard lens with autofocus, compact dimensions, and an essential design, while noting that it is not part of the L series and does not offer some features typical of more advanced professional lenses.