A constant f/4 aperture across its 18-120mm power zoom range, combined with a linear motor and internal zoom mechanism, makes this lens ideal for smooth, uninterrupted video work. Its lightweight 470g build and weather-sealed construction, developed with FUJINON cine lens designers, offer stepless aperture control from compatible X Series bodies. This lens is best for hybrid shooters and videographers needing a versatile, all-in-one zoom for run-and-gun documentary or event coverage.