Recognizable by its truly thin profile, along with an advanced autofocus motor, the EF-S 24mm f/2.8 STM from Canon is a 38.4mm-equivalent prime designed for APS-C-format DSLRs. Its optical design features one aspherical element, which helps to reduce distortion and spherical aberrations for high sharpness and clarity. A Super Spectra coating has also been applied, which helps to minimize lens flare and ghosting for improved contrast and color fidelity in bright lighting conditions. Additionally, benefitting both photo and video applications, an STM stepping AF motor is used to realize quick, accurate, and near-silent autofocus performance.

• Wide-angle lens for Canon APS-C cameras (equivalent to 38mm on a full-frame camera) offers an ultra-slim and lightweight design.
• Slimmest and lightest lens of the EF-S series (approx. lens width is 0.9 in, or slightly wider than a U.S. nickel).
• A stepping motor (STM) supports the Canon EOS Movie Servo AF function to provide smooth and quiet continuous AF during video recording, as well as when shooting photos.
• Delivers outstanding image quality and excellent low-light performance.
• Aspheric lens element helps you achieve a high level of image quality from the center to the periphery.
• Optimized lens arrangement and coating helps minimize ghosting and flare.
• Circular aperture (7 blades) delivers beautiful, soft backgrounds.
• Aperture mechanism uses micro-stepping drive control for quieter drive.
• Full-time manual focus allows manual focus adjustment while in One Shot AF Mode.
• Minimum focusing distance of 0.5 ft./0.16 m; maximum magnification of x0.27.