The Fujifilm WCLX100 is a wide angle converter for the X100(s). It has a 0.8 magnification ratio, effectively converting the fixed 23mm lens to 19mm. In 35mm full frame, this would be 28mm.
The WCL-X100 uses four lenses in 3 groups to achieve this and weighs only 150 gram so that you won’t be adding much weight to your setup. An additional benefit is that, unlike the Fujinon 23mm, the converter has a filter thread, so you can use any 49mm filter with it.
Fujifilm WCLX100 in use
The Fujifilm WCL-X100 is very easy to use, and you just need to remove the plastic protector ring from the X100(s)’s lens to reveal a the thread and screw on the wide angle converter. Secondly, you have to go into the menu system and enable the wide angle converter setting, so the camera knows you are using it.
The Fujifilm wcl-x100 does a great job at giving you a slightly wider angle and achieves image quality comparable to that of the original lens, even when wide open at f/2.0. Furthermore, it does not affect the minimum working distance in macro photography.