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Sony FE 1.4x Teleconverter vs VILTROX

Updated July 2026 — Sony FE 1.4x Teleconverter wins on price and build, VILTROX wins on weight and focal length.

The Sony FE 1.4x Teleconverter excels in optical performance and build quality, while the VILTROX 35mm f1.7 E offers great value and versatility.

Why Sony FE 1.4x Teleconverter is better

Optical Performance

Maintains full image quality and AF performance.

Build Quality

Dust and moisture resistant design.

Compatibility

Compatible with high-end Sony lenses.

Why VILTROX is better

Price

Significantly cheaper at $179.

Portability

Lightweight design at 170g.

Versatility

Suitable for various photography styles.

Overall score

Sony FE 1.4x Teleconverter
85
VILTROX
75

Specifications

SpecSony FE 1.4x TeleconverterVILTROX
Max Aperturef/2.8f/1.7
CompatibilitySpecific Sony lensesSony E-mount
AutofocusFast and accurateFast STM motor
Optical DesignAspherical element11 elements in 9 groups
Weather ResistanceYesNo

Dimension comparison

Sony FE 1.4x TeleconverterVILTROX

Overview of the Sony FE 1.4x Teleconverter

The Sony FE 1.4x Teleconverter is designed to enhance your photography by extending the range of compatible lenses by 1.4x. This teleconverter, priced at $598.00, is engineered to maintain full G Master performance and is compatible with specific Sony lenses. It is particularly favored by wildlife and sports photographers who require high-quality optics combined with versatility.

This teleconverter multiplies the focal length of your lens while introducing only a 1-stop light loss. Its dust and moisture-resistant design ensures reliability in challenging outdoor conditions, making it a solid choice for photographers who often shoot in unpredictable environments. The impressive optical performance stems from its aspherical lens element, ensuring that image quality remains uncompromised.

Overview of the VILTROX 35mm f1.7 E

The VILTROX 35mm f1.7 E is a prime lens priced at $179.00, offering exceptional value for photographers seeking a bright aperture and versatile focal length. With a maximum aperture of f/1.7, this lens excels in low-light situations and produces beautiful bokeh, making it ideal for portraits and street photography.

Weighing only 170g, this compact lens is highly portable, allowing photographers to easily carry it for extended periods. The optical design, which includes 11 elements in 9 groups, is optimized to minimize distortions and chromatic aberrations, ensuring sharp and vivid images. Additionally, the fast autofocus capabilities make it a strong contender for both stills and video work.

Price Comparison

The Sony FE 1.4x Teleconverter is priced at $598.00, while the VILTROX 35mm f1.7 E costs $179.00. This translates to a significant price difference of $419.00, making the VILTROX lens about 70% cheaper than the teleconverter.

This substantial cost gap is an important consideration for budget-conscious photographers. While the teleconverter offers extended range and professional-grade performance, the affordability of the VILTROX lens makes it accessible for hobbyists and entry-level photographers. This price difference may influence your decision based on your specific photography needs and budget constraints.

Optical Performance

In terms of optical performance, the Sony FE 1.4x Teleconverter retains the full image quality and autofocus performance of compatible lenses, ensuring that professional photographers can capture high-quality images without compromise. The teleconverter's aspherical lens element contributes to its impressive optical performance, particularly in demanding conditions.

On the other hand, the VILTROX 35mm f1.7 E features a bright f/1.7 aperture, which enhances its low-light performance and allows for creative depth of field effects. The lens includes optimized optical design elements, such as high refractive and extra-low dispersion elements, to minimize aberrations and improve overall image quality. Both products excel in their respective areas, but the choice ultimately depends on whether you prioritize extended range or a prime lens with a fast aperture.

Build Quality and Design

The Sony FE 1.4x Teleconverter boasts a robust design that is dust and moisture-resistant, making it suitable for outdoor photography. Its precision engineering ensures that it can withstand the rigors of professional use. This resilience is particularly important for photographers who frequent challenging environments.

Conversely, the VILTROX 35mm f1.7 E is compact and lightweight, weighing only 170g, which enhances its portability. The lens features a durable metal body, ensuring longevity while providing a sleek aesthetic. Its thoughtful design includes an extended lens hood to minimize stray light and improve contrast in images. While both products demonstrate solid build quality, the teleconverter is tailored for rugged conditions, while the VILTROX lens emphasizes portability and ease of use.

Compatibility and Use Cases

The Sony FE 1.4x Teleconverter is compatible with specific Sony lenses, such as the SEL70200GM and SEL100400GM, making it ideal for photographers who already own these lenses and wish to extend their shooting range. It is particularly well-suited for wildlife and sports photography, where capturing distant subjects with clarity is crucial.

In contrast, the VILTROX 35mm f1.7 E is designed for a broader range of Sony E-mount cameras, including popular models like the Sony ZV-E10 II and the a6400 series. Its versatile focal length of 35mm, which mimics the human eye, makes it an excellent choice for various photography styles, from landscapes to portraiture. This flexibility makes it appealing for general-purpose photography, especially for those starting their photography journey.

Autofocus Performance

The autofocus performance of the Sony FE 1.4x Teleconverter is directly linked to the lens it is paired with, allowing it to maintain fast and accurate focusing capabilities. This is crucial for capturing fleeting moments in sports and wildlife photography, where timing is everything.

Meanwhile, the VILTROX 35mm f1.7 E features a new STM motor that delivers fast and precise autofocus, which is especially beneficial for video recording due to its near-silent operation. This makes the VILTROX lens a strong option for videographers and content creators who require smooth focus transitions. Both products excel in autofocus, but the VILTROX lens offers additional benefits for video applications.

Which should you buy?

Choosing between the Sony FE 1.4x Teleconverter and the VILTROX 35mm f1.7 E ultimately hinges on your photography needs and budget. If you are a professional or serious enthusiast who frequently shoots sports or wildlife and already owns compatible lenses, the Sony teleconverter may be worth the investment for its ability to extend range without sacrificing image quality. However, if you are looking for an affordable, versatile lens for everyday photography, the VILTROX 35mm f1.7 E offers exceptional value and excellent optical performance at a fraction of the price.