|The 35mm Fujifilm X-mount|
The Fujifilm X-mount is a type of interchangeable lens mount designed by Fujifilm for use in their line of Mirrorless Interchangeable-Lens Cameras. It is currently only compatible with Fujinon XF lenses, however there is an adaptor to allow compatibility with Leica M lenses and third-party options have also been announced. Additionally, a host of adapters for a range of SLR lenses are available, allowing the mounting of lenses (without autofocus or auto aperture) from Canon, Nikon, Minolta, Contax/Yashica, Konica and more.
"By mounting the lens deeper inside the camera, closer to the sensor, resolution is increased across the frame. Information exchange between the body and lens ensure a responsive experience at all times."
Fujifilm X-Mount Cameras 
As of April, 2013, Fujiflm has released two cameras that utilize the X-mount.
- Fujifilm X-Pro1: The first X-mount camera, the X-Pro 1 has a traditional rangefinder styled body with a 16 megapixel X-Trans sensor and a hybrid viewfinder that combines an optical viewfinder that utilizes frame lines like a rangefinder, and the ability to switch to an Electronic Viewfinder.
- Fujifilm X-E1: Released in September of 2012, the X-E1 is smaller than the X-Pro1, but features the same 16 megapixel sensor and almost all the features except the optical viewfinder. Instead, the X-E1 features a higher resolution electronic viewfinder.
Fujinon XF Lenses 
Currently, only lenses from Fujifilm are natively operational on the Fujifilm X-mount cameras. These lenses are the 'XF' lens line, bearing Fujifilm's moniker "Fujinon" which is used for optics within the company. There are currently five Fujinon XF lenses available as of April, 2013.
- Fujinon XF 14mm f/2.8 R: This ultra-wide angle lens features a focus-clutch mechanism for switching to manual focus. The lens was announced in September, 2012.
- Fujinon XF 18mm f/2.0 R: A wide-angle pancake style lens and one of the original three lenses for the X system.
- Fujinon XF 35mm f/1.4 R: A fast normal prime lens. One of the original three lenses for the X system.
- Fujinon XF 60mm f/2.4 R Macro: Short telephoto lens suitable for portraiture. Focuses close to allow 1:2 magnification macro shooting. One of the original three lenses for the X system.
- Fujinon XF 18-55mm f/2.8-4 R LM OIS: The first zoom lens for the X-mount, this lens features a wide angle to short telephoto with a fast maximum aperture and optical image stabilization. This lens is available in a bundle with the Fujifilm X-E1 camera.
The following lens has been officially announced, but is not yet available:
- Fujinon XF 55-200mm f/3.5-4.8 R LM OIS: A telephoto zoom lens with fast maximum aperture. This lens was officially announced on April 17, 2013 and is expected to be available to the public in May 2013.
The following lenses appear on Fujifilm's official lens roadmap for the X-series, and are expected for release by 2014.
- Fujinon XF 27mm f/2.8: This is a wide standard lens with a very slim pancake design. It is expected to be available in mid-2013.
- Fujinon XF 23mm f/1.4 R: Having the field of view of a classic 35mm lens on a 'full frame' camera, this lens is expected to be available in late 2013.
- Fujinon XF 10-24mm f/4 R OIS: An ultra-wide angle zoom lens with image stabilization. This lens is expected to be available in late 2013.
- Fujinon XF 56mm f/1.2 R: This is a standard portrait length lens, with a field of view similar to an 85mm lens on a full frame camera with a fast f/1.2 aperture. This lens is expected to be available in early 2014.
- Carl Zeiss Touit 12mm f/2.8 Distagon T* : Ultra wide angle lens from Carl Zeiss AG. This lens is expected to be available in mid-2013.
- Carl Zeiss Touit 32mm f/1.8 Planar T*: Fast normal lens from Carl Zeiss AG. This lens is expected to be available in mid-2013.
- Carl Zeiss Touit 50mm f/2.8 Makro-Planar T*: Macro lens from Carl Zeiss AG. This lens is expected to be available in late 2013.
Short back focusing distance 
By reducing the distance between the rear lens element and the sensor, light fall-off towards the edges of the frame is minimised, while resolution is maintained from edge to edge.
- XF18mm / Back focus distance: 11.0mm
- XF35mm / Back focus distance: 21.9mm
- XF60mm / Back focus distance: 21.0mm
See also 
- "Leica M Adapter for Fujifilm X-Pro 1". Retrieved 2012-03-15.
- Admin, LR. "Third party Leica M-mount lens adapter for Fuji X-Pro1 to start shipping this month". Leica News & Rumors. Retrieved 27 March 2012.
- "Fujifilm X-Pro1 product page". Retrieved 2012-03-15.
- "Fujifilm releases XF 55-200mm F3.5-4.8 R LM OIS and updates lens roadmap". Digital Photography Review. Retrieved 23 April 2013.
- "Zeiss Touit 2.8/12". Carl Zeiss, AG. Retrieved 30 April 2013.