Extending the effective focal length of select <b>Sony</b> E-mount telephoto lenses, the <b>FE 2x Teleconverter</b> increases the lens's magnification by 2x for a narrower field of view. The dedicated design maintains full communication between the lens and E-mount mirrorless cameras, including auto-exposure metering, autofocus, and Optical SteadyShot image stabilization. This teleconverter is dust and moisture resistant to benefit working in harsh environmental conditions.