Fuji X Mount

Features of the Fuji X Mount

The Fuji X mount is the coupling system used by Fujifilm cameras and lenses with APS-C sensors. It is characterized by a diameter of 44 mm, a flange focal distance of 17.7 mm, and a crop factor of 1.5x. This means the distance between the sensor and the mount is shorter than in other systems, allowing for the design of more compact and lightweight lenses. Additionally, the crop factor implies that the equivalent focal length of the lenses is 1.5 times greater than indicated. For example, a 35 mm lens is equivalent to a 52.5 mm lens in full-frame format.

The Fuji X mount features a series of electrical contacts that enable communication between the camera and the lens, as well as control of the aperture, autofocus, and optical stabilization. It also includes a locking ring that ensures secure attachment and prevents the lens from accidentally detaching. Some lenses also have a manual aperture ring that allows depth of field adjustment directly from the lens.

In addition to native lenses, the Fuji X mount is compatible with lenses from brands such as Samyang, Sigma, and Tamron, among others. These lenses may offer different features and price points, but generally do not include an aperture ring or optical stabilization. It is also possible to use adapters to mount lenses from other systems, such as Canon, Nikon, or Leica, although in these cases some functions like autofocus or exposure metering may be lost.

The Fuji X mount is a versatile and compact system that offers a wide variety of options. Its design makes the most of the advantages of the reduced format, such as portability and image quality.