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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 portability.

The Sony FE 1.4x Teleconverter excels in optical performance and build quality, while the VILTROX 35mm F1.7 offers great value and portability.

Why Sony FE 1.4x Teleconverter is better

Optical Quality

Maintains full image quality and autofocus performance

Build Quality

Dust and moisture resistant design

Versatility

Extends focal length for various photography scenarios

Why VILTROX is better

Price

Significantly cheaper at $179.00

Weight

Lightweight design at 170 grams

Autofocus Tech

Incorporates modern STM autofocus technology

Overall score

Sony FE 1.4x Teleconverter
85
VILTROX
75

Specifications

SpecSony FE 1.4x TeleconverterVILTROX
ApertureN/AF1.7
Focal Length1.4x35mm
CompatibilitySony E-mountSony E-mount
Lens ElementsN/A11 elements
Moisture ResistanceYesNo

Dimension comparison

Sony FE 1.4x TeleconverterVILTROX

Overview of the Products

The Sony FE 1.4x Teleconverter is priced at $598.00, while the VILTROX 35mm F1.7 is significantly more affordable at $179.00, making it about 70% cheaper. Both products cater to photographers using Sony E-mount cameras, but they serve different purposes. The Sony product is designed to extend the reach of compatible lenses, while the VILTROX lens is a standalone prime lens that offers a large aperture for better depth of field and low-light performance.

Design and Build Quality

The Sony FE 1.4x Teleconverter is built to maintain full G Master performance with a dust and moisture resistant design. This robust construction enhances reliability, particularly for outdoor shooting. In contrast, the VILTROX 35mm F1.7 is lightweight at just 170 grams, making it easy to carry around for impromptu photography sessions. Both products prioritize portability and durability, but the Sony teleconverter offers more rugged features suitable for challenging environments.

Optical Performance

Optically, the Sony FE 1.4x Teleconverter multiplies the focal length of compatible lenses by 1.4x while maintaining full image quality and autofocus performance. This feature is particularly beneficial for sports or wildlife photography, where distance is often a factor. The VILTROX 35mm F1.7, on the other hand, boasts an optical structure of 11 elements in 9 groups, including specialized lenses for high refractive index and aspherical qualities. This design aims to produce beautiful bokeh and effective subject highlighting, catering more to portrait and artistic photography.

Autofocus Capabilities

The autofocus systems of these products differ notably. The Sony FE 1.4x Teleconverter retains the autofocus capabilities of the lens it is attached to, with no loss in performance. This makes it ideal for fast-paced shooting scenarios. The VILTROX 35mm F1.7 incorporates a built-in STM stepping motor, which supports efficient and reliable autofocus, including eye and face detection for better tracking. While both offer autofocus, the VILTROX lens may be more appealing to those who prioritize modern autofocus technologies.

Price Comparison

The price difference between the two products is significant, with the VILTROX 35mm F1.7 being priced at $179.00 compared to the Sony FE 1.4x Teleconverter’s $598.00. This makes the VILTROX lens approximately 70% cheaper, which may attract budget-conscious photographers seeking quality without a high expenditure. However, the Sony teleconverter justifies its higher price with advanced features aimed at professionals who require versatility and reliability in demanding conditions.

Intended Use Cases

The intended use cases for these products vary greatly. The Sony FE 1.4x Teleconverter is ideal for professional photographers who need to extend their lens' reach without sacrificing image quality, making it suitable for wildlife and sports photography. Conversely, the VILTROX 35mm F1.7 is well-suited for portrait and street photography, where a large aperture can create stunning bokeh and allow for effective low-light shooting. Therefore, the choice largely depends on the photographer's specific needs and shooting styles.

User Experience and Feedback

While there is no specific sales rank or user feedback data provided for either product, the features suggest a strong user experience for both. The Sony FE 1.4x Teleconverter is designed for those who demand high performance, particularly in challenging environments, while the VILTROX 35mm F1.7 offers a user-friendly experience with its lightweight design and advanced autofocus capabilities. Each product caters to different segments of the photography market, which could influence user satisfaction.

Which should you buy?

Choosing between the Sony FE 1.4x Teleconverter and the VILTROX 35mm F1.7 ultimately depends on your photographic needs and budget. If you require a versatile tool that enhances existing lens performance for specific scenarios like wildlife or sports photography, the Sony teleconverter is a sound investment at $598.00. Conversely, if you're looking for a cost-effective, high-quality prime lens for everyday photography, the VILTROX 35mm F1.7 at $179.00 offers excellent value and performance.