Canon RF 50mm F1.8 STM Lens - inspire your creativity. The Canon RF 50mm F1.8 STM Lens is a small, light and affordable lens with a fast f/1.8 aperture, ideal in low light and great for creative depth-of-field. With new optics and a very quiet STM motor, this modern "nifty fifty" will advance your photography. At 160g and 40.5mm, it is a highly compact and lightweight partner for your day-to-day shooting with EOS R-series cameras, with no adapter required. The RF 50mm F1.8 STM lens is a simple yet hugely versatile lens. Its superior sharpness, great low light performance and stunning bokeh make it ideal for many types of photography and video. Recreate that cinema look and take your photography to a new level of creativity by experimenting with different apertures. Create artistic and impactful images at lower ISO thanks to a wide f/1.8 aperture that achieves sharp focus on a subject yet delivers a beautiful blurred background. The STM (Stepping Motor) technology focuses very smoothly and in near-silence, ideal for stills and video. Super Spectra Coating on the lens elements ensure quality. Very discreet with a combined focusing and control ring for intuitive control, the lens has a 7-blade circular aperture for superb bokeh and focuses to 0.3m. Wide f/1.8 aperture RF mount Aspheric lens elemen STM Motor for smooth, fast, near silent autofocus Super Spectra Coating Height: 40.5 MM Width: 69.2 MM