Fujifilm GF 1.4x TC WR - 334463

Fujifilm GF 1.4x TC WR - 334463

The GF1.4X TC WR is a 1.4x teleconverter for G Mount. Attaching the teleconverter to GF250mF4 R LM OIS WR allows for telephoto shooting at a focal length of 350mm (approximately 277mm in 35mm format equivalent) while maintaining superior image quality. The maximum aperture is reduced by one F stop. As both the lens and the teleconverter are high quality, there’s hardly any deterioration in MTF when the teleconverter is attached.

What our Experts Think    

• The Fujifilm GF 1.4x TC WR (334463) is a high-quality 1.4× teleconverter for the GFX medium format system, designed to extend the reach of compatible GF telephoto lenses while maintaining professional optical performance.
• It provides a 1.4× focal length increase with a 1-stop light loss, making it a practical way to gain extra reach without switching to larger lenses.
• Experts highlight its tight integration with the GFX system, preserving autofocus, metering, image stabilization, and full EXIF communication between lens and body.
• Optical design uses 7 elements in 3 groups, engineered to minimize image degradation so overall sharpness remains very high when paired with compatible GF lenses.
• It is specifically optimized for lenses like the GF 250mm f/4 and GF 100–200mm f/5.6, extending them into longer telephoto ranges for wildlife and outdoor use.
• Weather-sealed construction ensures the full setup remains dust- and moisture-resistant, matching the durability standards of the GF lens lineup.
• At approx. 400g, it adds reach without dramatically increasing system size or weight, making it a practical field accessory rather than a burden.
• Overall, professionals see it as a “reach extender, not a compromise lens”—ideal when you want more focal length from existing GF telephoto glass while preserving the system’s medium format image quality.

               
Q&A  

Q: What is the Fujifilm GF 1.4x TC WR?
A: It is a medium format GFX teleconverter that increases focal length by 1.4×, extending the reach of compatible GF lenses while maintaining autofocus, metering, and image quality.

Q: What does it do to focal length?
A: It multiplies the attached lens by 1.4×, for example turning a compatible 250mm lens into a 350mm equivalent.

Q: How much light is lost when using it?
A: It causes a 1-stop light loss, so images become slightly darker compared to using the lens alone.

Q: Does it affect autofocus or stabilization?
A: No. It retains full communication between lens and camera, including autofocus, exposure metering, and image stabilization (if supported by the lens).

Q: Does it reduce image quality?
A: It is designed for minimal impact—both optics are high quality, so sharpness loss is very small in real-world use, especially with compatible GF telephoto lenses.

Q: Which lenses is it compatible with?
A: It works with select GF telephoto lenses such as the GF 250mm f/4 and GF 100–200mm f/5.6.

Q: Can it be used with all GF lenses?
A: No. It is only compatible with specific supported telephoto lenses and will not mount on incompatible GF optics.

                 
Maintenance Tips