Fujifilm’s Japanese headquarters says it will be releasing the Fujinon XF2X TC WR Teleconverter in June, although there has been no confirmation of this timing for North America. This is a 2X teleconverter for some X-mount lenses (currently the XF50-140 mm f/2.8 R LM OIS WR and the XF100-400 mm f/4.5-5.6 R LM OIS WR).
The teleconverter features a construction of 9 elements in 5 groups to maintain the optical performance of the original lens, says the company. Thanks to the unified design when mounted to a compatible lens, the teleconverter is weather and dust-resistant and operates at temperatures as low as -10C with the X-T1 and X-Pro2 camera bodies.
Phase detection AF is still available when using the 50-140 mm lens with the teleconverter. Contrast Detection AF is still available when using the 100-400 mm lens.
The company also says the camera’s optical image stabilization performance is unaffected by the addition of the teleconverter.
A firmware update is required for the 50-140 mm and 100-400 mm lenses to provide full compatibility. Fujifilm says this firmware is planned to be available at the beginning of June.