Sony FE Overview
Key Features

E-Mount Teleconverter/Full-Frame Format
1.4x Magnification Factor
Communication Between Lens & Camera
Maintains Metering, Autofocus, and OSS
Dust and Moisture-Resistant Construction
Compatible with Select Sony Lenses
Extending the effective focal length of Select Sony E-mount telephoto lenses, the FE 1.4x Teleconverter increases the lens's magnification by 1.4x 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. Additionally, this teleconverter also features a dust- and moisture-resistant construction, matching the lens, to benefit working in harsh environmental conditions.

Compatible Lenses
FE 70-200mm f/2.8 GM OSS
FE 100-400mm f/4.5-5.6 GM OSS
FE 200-600mm f/5.6-6.3 G OSS
FE 400mm f/2.8 GM OSS
FE 600mm f/4 GM OSS