The Canon EF-S 24mm f/2.8 STM lens is currently available for 159.00 € at both Amazon and Digit-photo.com, as reported by Les Numériques. This lens has been named the best affordable option after testing 174 different models in their lab. Designed for cameras with APS-C sensors and an EF-S mount, it has a 24mm f/2.8 aperture. On full-frame cameras, this would be equivalent to a 38mm lens. It includes an STM (Stepping Motor) for focusing, which is particularly useful for smooth and quiet autofocus during video recording. The lens is very light, weighing about 125 grams, and is less than 2 centimeters thick. The lens has a pancake design, meaning it is flat and compact, making it easy to carry. Its f/2.8 maximum aperture allows for decent performance in low light and enables a shallow depth of field for creative effects. The STM motor ensures smooth focusing when recording video. However, its optical performance has some drawbacks. At the widest aperture, sharpness is uneven, and there are noticeable chromatic aberrations—color fringes—on the edges of images. Distortions and vignetting (darkened corners) are reported to be minimal, though. Despite these optical issues, the Canon EF-S 24mm f/2.8 STM is still considered a solid choice for photographers who prioritize simplicity, discretion, and portability. It is especially well-suited for everyday use, where optical perfection is less critical than convenience and ease of handling. While it may not match higher-end lenses in image quality, its affordability and compact design make it a recommended option for casual photographers and those looking for a lightweight setup.