| Announced | 2012-06-08 |
| Indicative price (USD) | 249 |
| Aperture | f/2.8 |
| Focal range (mm) | 40 |
| Filter diameter (mm) | 52 |
| Max diameter (mm) | 68 |
| Mount type | Canon EF |
| Stabilization | No |
| AF Motor | Stepper motor (STM) |
| Zoom type | / |
| Rotating front element | |
| Tripod mount | No |
| Color | Black |
| Full-Time manual focus | Yes |
| Number of lenses | 6 |
| Number of groups | 4 |
| Diaphragm blades | 7 |
| Circular aperture | No |
| Length (mm) | 27 |
| Weight (gr) | 130 |





To provide photographers with a broader perspective about mobiles, lenses and cameras, here are links to articles, reviews, and analyses of photographic equipment produced by DxOMark, renown websites, magazines or blogs.
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Announced this past June alongside the Canon EOS Rebel T4i DSLR camera, the new Canon EF 40mm f/2.8 STM is an ultra-slim, entry-level pancake lens that uses Canon’s Stepping Motor Technology (STM) to enable extra-quiet continuous autofocus, making it well-suited for video shooting. |