Sony FE 2.0x Teleconverter (SEL20TC) – 97% Excellent E-Mount Teleconverter for G Master Lenses + 1-Week Warranty

The Sony 2x teleconverter (model SEL20TC) is one of the most valuable accessories any Sony telephoto shooter can own. It transforms compatible lenses into twice their focal length, giving you the reach you need for wildlife, sports, and distant subjects without the expense and bulk of a dedicated super-telephoto lens. The Sony 2x teleconverter is a precision optical instrument designed to maintain the exceptional performance of Sony’s G Master and G Lens lineup.

This unit is in 97% excellent condition. It has been gently used and shows only minimal signs of wear. The glass is clean, the electronic contacts are pristine, and the dust and moisture-resistant seals are intact. At $329, this is an exceptional value for a Sony 2x teleconverter, backed by a 1-week store warranty and free shipping worldwide.

Double Your Reach with Only 2-Stop Light Loss

The defining feature of the Sony 2x teleconverter is its ability to double the effective focal length of compatible lenses. A 70-200mm becomes a 140-400mm. A 100-400mm becomes a 200-800mm. A 200-600mm becomes a 400-1200mm. The Sony 2x teleconverter transforms your existing lenses into powerful super-telephoto tools.

The trade-off is a 2-stop light loss, which is standard for 2x teleconverters. This means an f/2.8 lens becomes f/5.6, and an f/4 lens becomes f/8. Despite this, the Sony 2x teleconverter maintains full optical quality and operability, allowing you to keep shooting with confidence in good lighting conditions.

Maintains Full G Master Performance

Sony designed the Sony 2x teleconverter specifically for its G Master and G Lens lineup. According to Sony’s official specifications, the teleconverter “maintains full G Master performance” and “full optical quality and operability are retained” . The optical design uses 8 elements in 5 groups, including aspherical elements, to preserve sharpness and suppress aberrations .

What does this mean for your images? When paired with a G Master lens, the Sony 2x teleconverter delivers images that remain sharp and detailed. Real-world user reviews confirm this. One photographer using it with the 70-200mm f/2.8 GM II noted “little loss of quality” . Another using it with the 100-400mm GM said there was “no apparent loss of sharpness or detail” . The Sony 2x teleconverter is the only 2x teleconverter that maintains this level of performance with Sony’s premium glass.

Full Communication with Lens and Camera

The Sony 2x teleconverter is not a simple piece of glass. It is a fully electronic accessory that maintains complete communication between your lens and camera body. This means auto-exposure metering works perfectly. Autofocus works perfectly. Optical SteadyShot (OSS) image stabilization works perfectly .

What does this mean for your shooting? You get the same reliable autofocus performance you expect from your G Master lenses. You get the same accurate exposure metering. You get the same stabilization that helps you shoot handheld at long focal lengths. The Sony 2x teleconverter integrates seamlessly into your existing workflow.

One user who paired it with the 70-200mm f/2.8 GM on an A7S III described it as “pure perfection” . Another using it with the 100-400mm GM and A7R III said it was “perfect” . The Sony 2x teleconverter delivers the performance that professionals demand.

Dust and Moisture Resistant Construction

The Sony 2x teleconverter features a dust and moisture-resistant construction, matching the build quality of Sony’s G Master lenses . This allows you to work in harsh environmental conditions without worrying about your equipment.

For wildlife photographers who spend hours in the field, this is essential. Rain, dust, and sand are constant threats. The Sony 2x teleconverter is built to handle them. It is a reliable tool for serious outdoor photography.

Compact and Lightweight

The Sony 2x teleconverter weighs just 207 grams (7.3 ounces) and measures 62.4mm x 42.7mm . It adds minimal bulk to your camera bag and minimal weight to your setup. When you need extra reach, you simply attach it between your lens and camera body. When you do not need it, it takes up almost no space.

For travel photographers and hikers, this is invaluable. You get the flexibility of a super-telephoto without carrying a dedicated super-telephoto lens. The Sony 2x teleconverter is the ultimate space-saving solution.

Compatible Lenses

The Sony 2x teleconverter is compatible with a wide range of Sony E-mount telephoto lenses. According to Sony’s official compatibility list, it works with:

• FE 70-200mm f/2.8 GM OSS

• FE 70-200mm f/2.8 GM OSS II

• FE 70-200mm f/4 Macro G OSS II

• 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

Whether you shoot wildlife with the 200-600mm G or sports with the 70-200mm GM II, the Sony 2x teleconverter extends your capabilities.

97% Excellent Condition – What This Means

This Sony 2x teleconverter is rated 97% excellent condition. The glass is clean with no scratches, fungus, or haze. The electronic contacts are pristine. The dust and moisture-resistant seals are intact. The mount shows only minimal signs of use. The body has minimal signs of wear consistent with careful ownership.

For a teleconverter at this price point, 97% excellent condition represents outstanding value. You get a fully functional, reliable accessory that is ready for professional use, backed by a 1-week store warranty.

What’s Included

This bundle includes the Sony 2x teleconverter (SEL20TC), the original front and rear lens caps, and the protective case where applicable. The teleconverter is ready to use out of the box.

Why Buy From Us

We are a trusted seller of pre-owned camera gear, and we stand behind every product we sell. This Sony 2x teleconverter comes with a 1-week store warranty, giving you peace of mind. If there is a functional issue within that period, we will make it right. We ship worldwide for free, and we take pride in honest condition grading and accurate descriptions.

Who Should Buy This Teleconverter

Wildlife photographers – Double the reach of your 100-400mm GM or 200-600mm G. The Sony 2x teleconverter gets you closer to birds and animals.

Sports photographers – Turn your 70-200mm GM II into a 140-400mm. The Sony 2x teleconverter captures action from farther away.

Nature photographers – Extend your 400mm f/2.8 GM or 600mm f/4 GM. The Sony 2x teleconverter brings distant subjects into frame.

Travel photographers – Carry one teleconverter instead of a second super-telephoto lens. The Sony 2x teleconverter saves space and weight.

Sony G Master owners – Maximize the versatility of your premium lenses. The Sony 2x teleconverter unlocks new capabilities.

Budget-conscious shooters – Get super-telephoto reach without buying a dedicated super-telephoto lens. The Sony 2x teleconverter is the affordable solution.

Comparison with Alternatives

vs Sony 1.4x Teleconverter (SEL14TC) – The 1.4x offers less reach but only 1-stop light loss. The Sony 2x teleconverter doubles focal length for maximum reach.

vs Sony 2x Teleconverter (new) – This 97% excellent unit offers the same performance for less. Save money.

vs Third-Party Teleconverters – Third-party teleconverters often lack full electronic communication and may degrade image quality. The Sony 2x teleconverter maintains full G Master performance.

vs Buying a Dedicated Super-Telephoto Lens – A 400mm f/2.8 GM costs thousands. The Sony 2x teleconverter gives you similar reach for a fraction of the price.

Honest Limitations

Final Verdict

The Sony 2x teleconverter is an essential accessory for any Sony E-mount telephoto shooter. It doubles your focal length with only a 2-stop light loss while maintaining full G Master optical performance, autofocus, and Optical SteadyShot. Its dust and moisture-resistant construction matches the build quality of Sony’s premium lenses. Its compact and lightweight design makes it easy to carry. At $329 in 97% excellent condition, this is an exceptional value. The 1-week store warranty provides peace of mind, and free worldwide shipping makes it easy to get started.

If you have been looking for a way to extend the reach of your Sony telephoto lenses without buying a dedicated super-telephoto, this is your opportunity. The Sony 2x teleconverter delivers professional results in a compact, affordable package.

Order the Sony FE 2.0x Teleconverter today.

Price: $329
Condition: 97% Excellent
Warranty: 1-week store warranty
Shipping: Free worldwide