High image quality design which maintains the optical performance of the original lens

• Construction of 9 elements in 5 groups maintains the optical performance of the original lens.
• By using the optimal image quality parameters for the overall characteristics of the original lens and 2x teleconverter, excellent imaging performance with great aberration suppression is still achieved.
• The aperture becomes two f-stops higher when the teleconverter is mounted, and the camera displays and records information reflecting the change in aperture and focal length.

Autofocus performance
Phase detection AF is still available when using the XF50-140mmF2.8 R LM OIS WR with the 2x teleconverter mounted.

Contrast Detection AF is still available when using the XF100-400mmF4.5-5.6 R LM OIS WR with the 2x teleconverter mounted. Accurate focusing at super-telephoto focal lengths with shallow depth of field is possible thanks to the AF performed by the image sensor thanks to mirrorless cameras’ “Live View”.

The optical image stabilization performance
The camera’s optical image stabilization performance is unaffected by the addition of the teleconverter.

Weather and dust-resistant and -10°C low-temperature operation
Using the teleconverter with a weather-resistant camera, such as the FUJIFILM X-T1 or X-Pro2 mirrorless digital camera and the FUJINON XF50-140mmF2.8 R LM OIS WR or XF100-400mmF4.5-5.6 R LM OIS WR lens does not affect the weather resistance of the system.

High-grade subtle appearance
The teleconverter’s high grade metal exterior has been designed with the X system in mind. When attached to a compatible FUJINON lens, the two products appear as one single lens.