A constant f/1.7 aperture across the entire 10-25mm zoom range eliminates exposure shifts while shooting, paired with a stepless, de-clicked aperture ring for silent, smooth iris pulls. Its Leica-certified optical design, featuring 4 ED and 3 aspherical elements, delivers high resolution in a rugged, weather-sealed 690g body. This lens is best for run-and-gun videographers and hybrid shooters who need a single, fast wide-to-standard zoom for documentary or event work.
