The Canon EF-S 24mm f/2.8 STM has a maximum aperture of f/2.8 which lets in quite a bit of light. Its minimum aperture is f/22. Canon says that its “aperture mechanism uses micro-stepping drive control for quieter drive”, which should benefit videographers who use auto exposure modes while shooting video. Vay Tiền Cấp Tốc Online Cmnd.

canon efs 24mm f 2.8 stm review