Sony FE 1.4x Teleconverter vs VILTROX
Updated July 2026 — Sony FE 1.4x Teleconverter wins on price and optics, VILTROX wins on weight and versatility.
The Sony FE 1.4x Teleconverter excels in optical performance and build quality, while the VILTROX 25mm F1.7 E offers affordability and versatility. Ultimately, the choice depends on specific photography needs.
Why Sony FE 1.4x Teleconverter is better
Optical Quality
Superior optical performance with full G Master capabilities.
Build Quality
Dust and moisture resistant design for outdoor reliability.
Compatibility
Specifically designed for high-end Sony lenses.
Why VILTROX is better
Price
Significantly cheaper option for budget-conscious photographers.
Low-Light
Brighter f/1.7 aperture for better low-light performance.
Autofocus
Fast and silent autofocus suitable for video recording.
Overall score
Specifications
| Spec | Sony FE 1.4x Teleconverter | VILTROX |
|---|---|---|
| Aperture | N/A | f/1.7 |
| Focal Length | Varies | 25mm |
| Compatibility | Select Sony lenses | Wide range of Sony E-mount |
| Light Loss | 1 stop | N/A |
| Weather Sealing | Yes | No |
Dimension comparison
Overview of the Products
When considering the right lens for your Sony camera, the choice often comes down to the specific needs of your photography. The Sony FE 1.4x Teleconverter, priced at $598.00, offers a substantial optical performance boost by extending the focal length of compatible lenses by 1.4x. In contrast, the VILTROX 25mm F1.7 E, priced at $176.00, caters to those seeking a bright prime lens, perfect for a range of photography styles. The VILTROX is about 70% cheaper than the Sony teleconverter, making it an appealing choice for budget-conscious photographers.
Optical Performance
The Sony FE 1.4x Teleconverter is engineered to maintain full G Master performance, ensuring that optical quality is not compromised. It integrates an aspherical lens element to enhance clarity and precision, making it particularly suitable for wildlife and sports photography. On the other hand, the VILTROX 25mm F1.7 E features a complex optical design with 12 elements in 10 groups, including High Refractive and Extra-low Dispersion elements. This design minimizes chromatic aberrations and distortion, resulting in sharp images. While the teleconverter is ideal for extending existing lens capabilities, the VILTROX shines with its overall image quality in various shooting conditions.
Compatibility and Versatility
The Sony FE 1.4x Teleconverter is specifically compatible with select Sony lenses, such as the SEL70200GM and SEL100400GM, making it a specialized tool for photographers who already own these high-end lenses. In contrast, the VILTROX 25mm F1.7 E is designed for a broader range of Sony E-mount cameras, including popular models like the a6400 and a6500. This versatility allows the VILTROX to cater to a wider audience, making it an excellent option for those who may not have specific telephoto lenses in their kit.
Price Comparison
With a retail price of $598.00, the Sony FE 1.4x Teleconverter is positioned as a premium accessory for serious photographers. In contrast, the VILTROX 25mm F1.7 E is available for just $176.00, representing a significant saving of $422.00. This price difference highlights the VILTROX as a more accessible option for those who may be starting their photography journey or need a reliable lens without breaking the bank.
Low-Light Performance
The VILTROX 25mm F1.7 E features a bright maximum aperture of f/1.7, which excels in low-light conditions and produces attractive background blur, making it a fantastic choice for portrait and street photography. The Sony FE 1.4x Teleconverter, while it extends focal length, results in a 1-stop light loss. This means that while it can enhance your existing lens's reach, it may not be as effective in very dim lighting situations compared to the VILTROX. For photographers prioritizing low-light performance, the VILTROX holds an advantage.
Autofocus Capabilities
The VILTROX 25mm F1.7 E is equipped with a new STM motor that enables fast and near-silent autofocus, making it a great choice for video recording and capturing spontaneous moments. Its design minimizes focus breathing, providing smooth transitions during focus changes. In comparison, the Sony FE 1.4x Teleconverter retains the autofocus capabilities of compatible lenses but does not enhance them. Therefore, if quick and silent focusing is a priority, the VILTROX is a clear winner.
Build Quality and Design
The Sony FE 1.4x Teleconverter is designed with a dust and moisture-resistant structure, making it reliable for outdoor shooting in various weather conditions. This durability is essential for outdoor photographers working in challenging environments. Conversely, the VILTROX 25mm F1.7 E includes thoughtful design elements, such as an extended lens hood to reduce flare and a USB-C port for firmware updates. While both lenses offer good build quality, the Sony's ruggedness may appeal more to those frequently working outdoors.
Which should you buy?
Choosing between the Sony FE 1.4x Teleconverter and the VILTROX 25mm F1.7 E ultimately depends on your specific photography needs. If you require an accessory that enhances the reach of your existing telephoto lenses and offers premium optical performance, the Sony teleconverter is a solid investment. However, if you are looking for an affordable, versatile lens that excels in low-light conditions and offers fast autofocus for a variety of photography styles, the VILTROX presents a compelling case. Given the significant price difference of about 70% less for the VILTROX, it is an excellent choice for those starting out or needing a reliable prime lens.

