This Canon EF 40mm F2.8 STM lens is extremely versatile thanks to its compact size and high optical performance encouraging photographers and videographers to exceed their limits. With a wide, high-speed aperture and STM autofocusing this lens promises to deliver results in the most challenging of environments. The integrated STM technology ensures autofocus is accurate and quiet, optimized for video use with compatible Canon cameras. This Canon EF 40mm F2.8 STM lens has been especially designed for the active, anytime, anywhere photographer. Order yours now.