24mm · f/2.8
The Canon EF 24mm f/2.8 is a compact, affordable wide-angle lens with decent optical performance. It is reasonably sharp in the center wide open, with peak sharpness at f/5.6. However, corners are soft at f/2.8, improving by f/4 and becoming sharp at f/5.6. Weaknesses include heavy vignetting (over 3 stops at f/2.8), flare proneness, and modest bokeh with a 6-blade aperture. Build quality is dated and plasticky, with an AFD motor that focuses decently but not quickly. It suits budget-conscious photographers needing a lightweight, compact 24mm prime for landscapes or general use, especially when stopped down.