Sony FE 1.4x Teleconverter

The Sony FE 1.4x Teleconverter is a dedicated accessory designed to extend the effective focal length of select Sony E-mount full-frame telephoto lenses, increasing the attached lens’s magnification by 1.4x for a narrower, more distant field of view without degrading optical performance, autofocus speed and precision, or overall operability.

Optically, the teleconverter is built from 6 elements in 5 groups, with an impressive aspherical lens element contributing to consistently strong image quality once attached. Light loss with the teleconverter is approximately 1 stop, so compatible lenses see their maximum aperture reduced accordingly (for example, the FE 100-400mm f/4.5-5.6 GM OSS becomes an effective f/6.3-8 when paired with this teleconverter). The dedicated design maintains full communication between the lens and camera body, preserving autofocus speed and accuracy, auto-exposure metering, and Optical SteadyShot (OSS) image stabilization.

Build quality includes a dust- and moisture-resistant construction, precision-engineered for reliability in demanding outdoor conditions, making it a compact, lightweight alternative to carrying a separate, larger super-telephoto lens. The teleconverter measures approximately 1.3 in. (33.6mm) in length by 2.5 in. (63.5mm) in diameter and weighs approximately 5.9 oz. (167g).

The teleconverter is compatible only with a specific range of Sony telephoto lenses, including the FE 70-200mm f/2.8 GM OSS (original and Mark II versions), FE 100-400mm f/4.5-5.6 GM OSS, FE 200-600mm f/5.6-6.3 G OSS, FE 300mm f/2.8 GM, FE 400mm f/2.8 GM OSS, FE 400-800mm f/6.3-8 G OSS, and FE 600mm f/4 GM OSS; it is not compatible with other Sony E-mount lenses or third-party lenses, so photographers should confirm compatibility with their specific lens before use.

Key Features
– 1.4x teleconverter for select Sony FE (full-frame) E-mount telephoto lenses
– 6 elements in 5 groups, including an aspherical element
– Approximately 1-stop light loss
– Maintains full autofocus speed/precision, metering, and OSS image stabilization
– Dust- and moisture-resistant construction
– Compact, lightweight design (approximately 167g)
– Compatible only with select Sony G Master/G telephoto lenses (confirm specific lens compatibility)
– Not compatible with third-party lenses