The FUJINON TELECONVERTER XF1.4X TC WR is a high-performance teleconverter capable of multiplying the focal length of compatible lenses1 by 1.4x. When mounted, the teleconverter increases the lens aperture by one f-stop, however its sophisticated optical design constructed of 7 elements in 3 groups maintains the optical performance of the original lens. Additionally, thanks to the unified design when mounted to a compatible lens1, the teleconverter is weather and dust-resistant and operates at temperatures as low as -10C. This ensures it can be used with confidence outdoors with the weather and dust-resistant X-T1 camera body and XF50-140mmF2.8 R LM OIS WR lens.
1 Compatible lenses As of October 21st, 2015
XF50-140mmF2.8 R LM OIS WR 70-196mmF4 with teleconverter mounted Equivalent to 107-299mm on a 35mm format
High image quality design which maintains the optical performance of the original lens
The teleconverters construction of 7 elements in 3 groups maintains the optical performance of the original lens
By using the optimum image quality parameters for the overall characteristics of the original lens and 1.4x teleconverter, an excellent imaging performance with great aberration suppression can be achieved even when the focal length is multiplied by 1.4x.
The camera displays and records information reflecting the change in aperture and focal length when the teleconverter is mounted.
The cameras autofocus performance is unaffected by the addition of the teleconverter
An AF speed equivalent to that of the lens by itself is still achieved when the teleconverter is mounted.
Thanks to mirrorless cameras Live View Contrast Detection autofocus, shooting at minimum aperture values is still possible despite the f-stop being increased by mounting the teleconverter. Also, accurate focusing at super-telephoto focal lengths with shallow depth of field is possible thanks to the AF performed by the image sensor.
Weather and dust-resistant and -10C low-temperature operation
Using the teleconverter with a weather-resistant camera and lens, such as the "FUJIFILM X-T1" premium mirrorless camera and the "FUJINON Lens XF50-140mmF2.8 R LM OIS WR", does not affect the weather resistance of the system.
High-grade subtle appearance
The teleconverters 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.
Type FUJINON LENS XF1.4X TC WR
Lens construction 7 elements 3 groups
Focal length 1.4x that of original lens
Max. aperture 1 additional stop
Min. aperture 1 additional stop
Focus range Approx. same as that of original lens
Max. magnification 1.4x that of original lens
External dimensions Diameter x Length distance from camera lens mount flange Approx. F58mm x 15mm
Weight excluding lens caps Approx.130g
A firmware update is required for the camera body as well as the "XF50-140mm F2.8 R LM OIS WR" lens in order to provide full compatibility. This firmware is planned to be available on October 29th 2015. Please note that when updating firmware, make sure you update the camera firmware before updating the lens.
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