Canon EF 40mm f/2.8 STM Lens

Canon EF 40mm f/2.8 STM Lens
The Canon EF 40mm f/2.8 STM is an ultra-slim “pancake” prime lens that delivers exceptional sharpness in a remarkably portable package. Measuring less than one inch thick, it is the ultimate “walk-around” lens, turning even a full-size DSLR into a sleek, street-ready camera. Whether you are capturing candid moments, travel landscapes, or high-quality video, this lens provides a natural “short-normal” perspective with the silent, smooth performance of Canon’s STM technology.

Ultra-Portable Pancake Design
Compact Form Factor: The slim, lightweight design makes this lens virtually disappear on your camera body, ensuring you can carry your gear all day without fatigue.

Versatile Focal Length: On full-frame cameras, the 40mm view offers a slightly wider-than-normal perspective that is perfect for street and documentary photography. On APS-C models, it provides a 64mm equivalent focal length, ideal for flattering portraits.

f/2.8 Maximum Aperture: A bright aperture that allows for great low-light performance while maintaining the lens’s tiny footprint. It provides beautiful subject isolation and control over background blur.

Advanced Optics and Silent Focus
STM Stepping Motor: Features a specialized AF motor designed for smooth, near-silent focusing. This is a critical advantage for videographers, as it prevents focus noise from being picked up by the camera’s microphone.

High-Precision Glass: The optical layout includes one aspherical element to suppress distortion and spherical aberrations, ensuring your images are crisp and clear from edge to edge.

Super Spectra Coating: Canon’s premium coating minimizes lens flare and ghosting, maintaining high contrast and vibrant color accuracy even when shooting in bright, direct light.

Rounded Seven-Blade Diaphragm: Ensures a soft, pleasing out-of-focus quality, giving your photos a professional look when using shallow depth-of-field techniques.

Built for Daily Use
Advanced AF Algorithms: Combined with a high-speed CPU, the STM system delivers fast and accurate autofocus for stills while maintaining its “movie-servo” smoothness for video.

Rear Focus System: By moving only the rear lens elements during focus, the lens remains compact and achieves faster response times.

Technical Specifications
Focal Length: 40mm (64mm equivalent on APS-C)

Aperture Range: f/2.8 to f/22

Lens Mount: Canon EF (Full-Frame and APS-C compatible)

Filter Size: 52mm

Weight: Approx. 4.6 oz (130 g)

Thickness: Approx. 0.9″ (22.8 mm)