Clear, high fidelity descriptive performance in a compact, lightweight form make this lens a perfect partner for FUJIFILM X-M1. With a focal length of 41mm; and about the same angle of view of the human eye, this lens is not only a superb snapshot choice, but also performs well in a variety of scenes from portraits and landscapes to architectural shots. High-speed, high-precision AF is driven by a built-in high-torque DC coreless motor to capture fleeting moments in sharp focus. ; 35mm format equivalent. Focal length: 27 mm max. Aperture: f2.8 min. Aperture: f16 filter size: 39 mm 135 equivalent: 41 mm lens type: prime lens lens mount: fujifilm x mount. Model number p10nl00120a.