The Fujifilm XF 18-135mm f/3.5-5.6 R LM OIS WR Lens is a wide-angle to telephoto zoom lens designed for Fujifilm X-mount mirrorless cameras, where it provides a 35mm-equivalent focal length range of 27-206mm. Its optical system comprises 16 elements in 12 groups and includes four aspherical elements and two extra-low dispersion glass elements to maintain an overall compact form factor as well as reduce chromatic aberrations and distortions throughout the zoom range. An HT-EBC multi-layer coating has also been applied to lens elements to suppress lens flare and ghosting to realize contrast-rich, color-neutral imagery.

Benefitting this lens' use in difficult lighting conditions, an enhanced optical image stabilization system compensates for up to five effective stops of camera shake to produce sharper imagery with slower shutter speeds. For working in fast-paced situations, an inner focusing system, coupled with a linear AF motor, produces smooth and quiet focusing with a max AF speed of just 0.1 seconds.

Protecting the lens in inclement weather, the barrel features 20 distinct seals and an internal ventilator offers smooth zoom adjustment while preventing dust and moisture from entering the lens.