The Fujifilm XF 18mm (27mm) F2.0 Lens is specifically designed for the Fujifilm X-Pro1 camera with an APS-C sensor, this Fujifilm 18mm f/2.0 XF R Lens is a lightweight, compact wide-angle "pancake" lens equivalent to 27mm in 35mm format. Using glass-mold aspheric lenses at the 5th and 7th elements, is effective to in increasing the maximum aperture (5th element) and reducing the overall thickness of the lens (7th element). The final element, positioned as closely to the sensor as possible, makes the incidence angle of light reaching the sensor smaller and reduces vignetting and color shading, while helping to keep the lens's overall size small.
The very fast, bright f/2.0 maximum aperture makes shooting in very low light possible and provides pleasing bokeh (the out-of-focus portion of a photo) with its 7-blade aperture design. This is a terrific lens for street photography, landscapes and interiors. To take advantage of the X-Pro1's mirrorless design, the rear element of the lens is as close as possible to the sensor, minimizing the back focus distance appreciably.
The lens construction includes a metal barrel, Super EVC coating for improved optical performance and it delivers improved center-to-edge resolution and brightness free from chromatic aberration. The final lens element, positioned as close to the sensor as possible, makes the incidence angle of the light reaching the sensor smaller and thus reduces vignetting and color shading, while helping to keep the lens's overall size small. This lens has a maximum magnification of 0.14x and the aperture ring has 1/3-stop click stops for more precise exposures.