Fujifilm Lens Fujinon XF55-200mm F3.5-F4.8 R LM OIS

The lens XF 55-200mmF3.5-4.8 R LM OIS has alternatives available from the Tamron:
Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD
Tamron 150-500mm F/5-6.7 Di III VC VXD
Tamron 17-70mm F/2.8 Di III-A VC RXD
Tamron 11-20mm F/2.8 Di III-A RXD

The XF 55-200mm f/3.5-4.8 R LM OIS Lens from Fujifilm is a telephoto zoom lens for the Fujifilm X-series mirrorless cameras. It offers a 35mm focal length equivalency of 84-305mm, providing portrait length to super telephoto capabilities. The minimum focus distance is 3.6' at all focal lengths, enabling telephoto close-ups.  With OIS Image Stabilization, it provides up to 4.5 stops of shake correction for sharp imaging in low light situations or when utilizing its longest focal lengths. Two linear motors facilitate high speed auto focus (0.28 seconds) as well as smooth and quiet operation, which is important for stability at long focal lengths, and when shooting video.

The lens configuration includes one aspherical element, two ED (Extra-low Dispersion) lens elements, and one Super ED element to minimize chromatic aberration and provide corner to corner sharpness throughout the zoom range. Fujifilm's HT-EBC lens coating controls reflections and substantially reduces flare and ghosting.

The lens barrel itself is constructed of high quality metal and includes both a focusing ring and aperture ring for easy adjustments while keeping your eye on the subject. The aperture ring offers 17 stops in 1/3 EV steps, and the steps are click stops for accurate manual control.