Overview - Compact, lightweight, and close-focusing, the Canon RF 50mm f/1.8 STM is a sleek normal-length prime offering a classic, versatile field of view and an especially compact design. An ideal lens for every day, walkaround shooting, this 50mm f/1.8 is characterized by its bright design for available light shooting and apt depth of field control. The optical design incorporates one aspherical element, which reduces spherical aberrations and distortion, and also sports a Super Spectra coating to minimize flare and ghosting for improved contrast and color accuracy. Also, an STM motor affords impressively quiet and smooth autofocus performance and full-time manual focus override. Additionally, a configurable Control Ring lets you adjust exposure settings, including ISO, aperture, and exposure compensation, from the lens itself. Normal-length prime is designed for use with full-frame Canon RF-mount mirrorless digital cameras. Bright f/1.8 maximum aperture suits working in difficult lighting conditions and also offers increased control over depth of field. One precision-molded (PMo) aspherical element suppresses spherical aberrations and distortion for high sharpness and accurate subject rendering. Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions. STM stepping motor offers fast, quiet, smooth, and accurate autofocus performance that is ideal for video recording as well as still shooting. Configurable Control Ring can be used to adjust a variety of exposure settings, including aperture, ISO, and exposure compensation. Rounded seven-blade diaphragm contributes to a pleasing bokeh quality. - Key Features RF-Mount Lens/Full-Frame Format Aperture Range: f/1.8 to f/22 One Aspherical Element Super Spectra Coating STM Stepping AF Motor Customizable Control Ring Rounded 7-Blade Diaphragm - Technical Details Focal Length : 55 to 250mm (35mm Equivalent Focal Length: 88 to 400mm) Maximum Aperture : f/4 to 5.6 Minimum Aperture : f/22 to 32 Lens Mount : Canon EF-S Format Compatibility : APS-C Angle of View : 27° 50' to 6° 15' Minimum Focus Distance : 3.61' / 1.1 m Maximum Magnification : 0.31x Optical Design : 12 Elements in 10 Groups Diaphragm Blades : 7, Rounded Focus Type : Autofocus Image Stabilization : Yes Filter Size : 58 mm (Front) Dimensions (ø x L) : 2.76 x 4.25" / 70 x 108 mm Weight : 13.76 oz / 390 g In The Box - Canon E-43 43mm Lens Cap - Canon Lens Dust Cap RF