The Fujifilm X-Pro1 ... is visible in JPEGs wide-open, as indicated by the dimmer corner crops. At f/8, vignetting is very low. We're not sure if the camera is doing any corner shading correction ...

Lens Performance – The Fujinon Super EBC 23mm f/2 II fixed lens has a “35mm-equivalent” field of view similar to a 35mm lens on a full frame camera. This is the “wide standard” favoured ...