Canon

Canon EF-S2428STM 24mm f/2.8 STM Pancake Lens

Slip a tack-sharp 24mm prime into your pocket and shoot APS-C street, travel, and documentary work without the bulk.

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Overview

The Canon EF-S 24mm f/2.8 STM exists at an interesting intersection: a prime lens small enough to forget you're wearing it, with image quality honest enough to produce work you're proud of. On an APS-C body, its ~38mm equivalent view is one of the most versatile perspectives in photography — wide enough for environmental context, tight enough to feel intimate. Street photographers, documentary shooters, and travelers who want a camera they can carry all day without muscle fatigue find it transforms how freely they shoot. The lens doesn't demand your attention; it just stays ready.

Build quality is honest for the price — polycarbonate construction keeps weight to a minimum, and the STM focus motor is notably smooth and quiet for video applications. At f/2.8, corner sharpness is competent without being exceptional; stop down to f/5.6 and the image snaps into edge-to-edge clarity that rewards careful composition. The 52mm filter thread and 7-blade aperture round out a package that feels considered rather than compromised. It won't challenge Canon's L-series glass in demanding conditions, but for the photographer who wants a capable prime they'll actually carry every day, it delivers reliably.

Specifications

Brand
Canon
Model
EF-S 24mm f/2.8 STM
Mount
Canon EF-S
Focal Length
24mm
Maximum Aperture
f/2.8
Lens Construction
6 elements in 5 groups
Minimum Focusing Distance
0.52 ft (0.16 m)
Filter Size
52mm
Aperture Blades
7 (circular)

Frequently Asked Questions

On any Canon APS-C body (crop factor 1.6x), the 24mm becomes approximately 38mm equivalent — very close to a classic 40mm or "normal" perspective. It's wide enough to include environmental context in portraits and street work, but not so wide that it distorts faces at close range.
STM (Stepping Motor) autofocus was designed with smooth, near-silent video AF in mind — it won't produce the clunky hunting noise of older USM lenses on video. For stills, it's responsive in good light but noticeably slower in low light than Canon's faster ring USM lenses.
F/2.8 gives you meaningful separation from a standard kit lens and handles indoor ambient well in moderate light. In dim venues or at night, you'll be pushing ISO — f/2.8 isn't a substitute for an f/1.8 or faster prime if low-light performance is your primary need.
No — the EF-S 24mm f/2.8 STM has no optical image stabilization. If your body has in-body IS (some Canon bodies do not), that will compensate; otherwise plan for higher shutter speeds in lower light.
It is an EF-S mount lens designed specifically for APS-C sensors. It will physically mount on full-frame Canon EF bodies but will produce severe vignetting and is not recommended for full-frame use.