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Sony FE 1.4x Teleconverter vs VILTROX

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

The Sony FE 1.4x Teleconverter excels in optical performance and build quality, while the VILTROX 25mm f1.7 offers great value and versatility.

Why Sony FE 1.4x Teleconverter is better

Optical Quality

Maintains full G Master performance with minimal light loss.

Build Quality

Dust and moisture resistant design for outdoor reliability.

Target Users

Designed for professional photographers needing enhanced reach.

Why VILTROX is better

Price

Significantly more affordable at $176.

Weight

Lightweight design at only 170 grams.

Versatility

Functions as a standalone lens for various photography styles.

Overall score

Sony FE 1.4x Teleconverter
85
VILTROX
72

Specifications

SpecSony FE 1.4x TeleconverterVILTROX
Focal Length1.4x25mm
ApertureN/Af1.7
CompatibilitySEL70200GM, SEL100400GMSony E-Mount
WeightN/A170g
Weather SealingYesNo

Dimension comparison

Sony FE 1.4x TeleconverterVILTROX

Overview of Sony FE 1.4x Teleconverter and VILTROX 25mm f1.7

The Sony FE 1.4x Teleconverter and VILTROX 25mm f1.7 are two distinct camera accessories designed for Sony E-mount cameras, each catering to different photographic needs. The Sony FE 1.4x Teleconverter, priced at $598.00, is ideal for extending the focal length of compatible lenses, making it a favorite for wildlife and sports photography. In contrast, the VILTROX 25mm f1.7, available for $176.00, is a versatile prime lens celebrated for its large aperture and lightweight design, perfect for street photography and various creative endeavors.

Price Comparison

In terms of price, the VILTROX 25mm f1.7 is substantially more economical, retailing at $176.00, which is approximately 70% less than the Sony FE 1.4x Teleconverter, priced at $598.00. This difference makes the VILTROX a more accessible option, especially for amateur photographers or those on a budget. The significant cost disparity also reflects the different functionalities; the teleconverter enhances existing lenses, while the VILTROX serves as a standalone prime lens.

Optical Performance

The optical performance of both products is impressive, tailored to their specific uses. The Sony FE 1.4x Teleconverter maintains full G Master performance while effectively multiplying the focal length of compatible lenses by 1.4x, with only a one-stop light loss. This ensures that photographers can achieve excellent image quality even at longer distances. On the other hand, the VILTROX 25mm f1.7 features a complex optical structure with 12 elements in 10 groups, including aspherical and ED lenses, which contribute to its ability to create beautiful bokeh and sharp images.

Build Quality and Design

When it comes to build quality, the Sony FE 1.4x Teleconverter boasts a dust and moisture-resistant design, ensuring reliability during outdoor shoots, which is crucial for photographers who work in challenging environments. In contrast, the VILTROX 25mm f1.7 is notable for its lightweight and compact design, weighing only 170 grams. This portability is advantageous for spontaneous photography, making it an excellent choice for street and travel photographers who need to capture moments on the go.

Autofocus Capabilities

The autofocus systems of both products cater to different needs in photography. The Sony FE 1.4x Teleconverter allows for full autofocus performance with compatible lenses, maintaining the sophisticated autofocus capabilities of the G Master series. This is particularly beneficial for capturing fast-moving subjects in wildlife and sports photography. Meanwhile, the VILTROX 25mm f1.7 features a built-in STM stepping motor that provides efficient and reliable autofocus, supporting eye and face detection for precise tracking. This makes it ideal for portrait photography, where sharp focus on the subject is essential.

Versatility in Use

The versatility of each product is defined by its intended use case. The Sony FE 1.4x Teleconverter is designed specifically to extend the capabilities of existing lenses, making it a specialized tool for those who already own compatible lenses like the SEL70200GM and SEL100400GM. Conversely, the VILTROX 25mm f1.7 functions as a standalone lens that can be used in various scenarios, including landscapes, portraits, and low-light conditions, thanks to its wide f1.7 aperture. This adaptability makes the VILTROX a more versatile option for photographers seeking a single lens for multiple applications.

Target Users

Target users for these products differ significantly. The Sony FE 1.4x Teleconverter appeals primarily to professional photographers and serious enthusiasts who require enhanced reach and performance from their existing telephoto lenses. Its design and price point reflect a commitment to high-end photography. In contrast, the VILTROX 25mm f1.7 is aimed at a broader audience, including hobbyists and entry-level photographers who desire quality and performance without a hefty investment, making it an attractive option for those just starting with Sony E-mount cameras.

Which should you buy?

Deciding between the Sony FE 1.4x Teleconverter and the VILTROX 25mm f1.7 largely depends on your photography needs and budget. If you require an extension for your telephoto lens and prioritize high performance in wildlife or sports photography, the Sony FE 1.4x Teleconverter is the right choice, despite its higher price of $598.00. However, if you're looking for a budget-friendly and versatile lens that excels in various shooting conditions, the VILTROX 25mm f1.7 at $176.00 emerges as the clear winner. Ultimately, both products offer unique advantages tailored to different facets of photography, making your choice a reflection of your specific requirements.