The Tamron TC-X20 is used to increase the focal lengths of select Tamron lenses. Key features include:
Doubles Your Focal Length. The TC-X20 2.0x Teleconverter doubles the range of compatible lenses with only two stops of light loss while retaining aperture control.
Compatibility. This teleconverter works with the Tamron 150-600mm f/5-6.3 SP Di VC USD G2 for Nikon, Tamron 70-200mm f/2.8 SP Di VC USD G2 for Nikon, Tamron 70-210mm f/4 Di VC USD for Nikon, and Tamron 100-400mm f/4.5-6.3 Di VC USD for Nikon.
High-Quality Design. BBAR coating reduces reflections, ghosting, and flaring, while the durable, weather-resistant barrel enables use in harsh conditions.