【Large F1.7 Aperture】The large F1.7 aperture blurs backgrounds, easily highlights subjects, and is well suited for low-light conditions. The 25mm lens with F1.7 aperture is ideal for nighttime portraits and street photography. 【Professional Optics】The AF 25mm F1.7 camera lens features 1 extra-low dispersion (ED) lens, 2 high refractive index (HR) lenses, and 2 high-resolution nano multi-coated aspherical lenses (ASPH) for clear and sharp details, beautiful bokeh, and true-to-life color reproduction. 【Autofocus】 The Viltrox 25 F1.7 features a built-in silent STM motor with eye and face detection for fast and accurate focusing. A minimum focus distance of 0.3 m captures more details. 【Lightweight and Durable】The AF25mm F1.7 FE lens weighs just 170 grams with a compact, portable design. Featuring an aluminum alloy body and a 52mm metal mount, it delivers long-lasting durability. 【38mm Focal Length】Viltrox 25 mm F1.7 corresponds to a full-frame equivalent of approximately 38 mm, which is between standard and wide angle and offers a natural and comfortable field of view, ideal for everyday street photography, environmental portraits, still lifes, and interior shots. VILTROX 25mm F1.7 XF APS-C Lens, AF 25mm F1.7 X Mount Camera Lens for Fuji XF, Autofocus Large Aperture APS-C Lens Compatible with Fujifilm X-Mount Cameras X-T4 X-T10 X-T20 X-E4 X-H1 X-Pro3