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Canon RF45mm F1.2 STM vs VILTROX

Updated July 2026 — Canon RF45mm F1.2 STM wins on aperture and optics, VILTROX wins on price and weight.

The Canon RF45mm F1.2 STM excels in low-light performance and optical quality, while the VILTROX 20mm f2.8 FE offers a budget-friendly option with good portability.

Why Canon RF45mm F1.2 STM is better

Aperture

Canon has a wider f/1.2 aperture.

Optical Quality

Canon features advanced optical design.

Bokeh

Canon creates superior bokeh effects.

Why VILTROX is better

Price

VILTROX is significantly cheaper.

Weight

VILTROX is lighter at 157g.

Autofocus

VILTROX has fast autofocus for moving subjects.

Overall score

Canon RF45mm F1.2 STM
85
VILTROX
70

Specifications

SpecCanon RF45mm F1.2 STMVILTROX
Aperturef/1.2f/2.8
Focal Length45mm20mm
AutofocusYesYes
Weight540g157g
Price$469.00$176.00

Dimension comparison

Canon RF45mm F1.2 STMVILTROX

Overview

The Canon RF45mm F1.2 STM and the VILTROX 20mm f2.8 FE are two compelling prime lenses that cater to different photographic needs. Priced at $469.00, the Canon RF45mm offers a wide f/1.2 aperture, while the VILTROX 20mm is significantly cheaper at $176.00, featuring a f/2.8 aperture. Both lenses target distinct user bases, making it essential to consider their specifications before making a decision.

Design and Build Quality

The Canon RF45mm F1.2 STM is designed with a focus on creating a compact and reasonably priced large-diameter lens. Its short back focus and high-quality optical features contribute to its lightweight nature, allowing for easy handling. In contrast, the VILTROX 20mm f2.8 FE is a sleek lens weighing just 157g, emphasizing portability. This compact design is particularly appealing for spontaneous urban or landscape photography. While both lenses are compact, the VILTROX stands out for those prioritizing lightweight equipment.

Aperture Performance

When it comes to aperture, the Canon RF45mm F1.2 STM excels with its wide f/1.2 opening, allowing for faster shutter speeds in low-light situations. This feature is beneficial for photographers who need to capture high-quality images in dim environments. The VILTROX 20mm, with its f/2.8 aperture, provides decent low-light performance but falls short of the RF45mm's capabilities. The Canon's ability to create stunning bokeh effects enhances the three-dimensional look of images, ideal for portrait and lifestyle photography.

Autofocus and Usability

The VILTROX 20mm f2.8 FE offers fast autofocus performance, crucial for capturing fast-moving subjects. It supports EXIF information transmission, ensuring seamless integration with Sony cameras. This near-silent operation makes it a practical choice for videographers and those shooting in quiet settings. While the Canon RF45mm also features effective autofocus, the specific benefits of the VILTROX make it particularly user-friendly for action shots. Users looking for autofocus precision may find the VILTROX more suitable for dynamic shooting environments.

Optical Performance

Optical quality is a key consideration in any lens comparison. The Canon RF45mm features one PMo aspheric lens aimed at reducing aberrations, a significant enhancement for a lens of its type. This design delivers sharp images with minimal distortion, making it an excellent choice for portraiture and detailed work. The VILTROX 20mm boasts an optical structure of 10 elements in 8 groups, including 2 ED lenses and 2 aspherical lenses, ensuring crisp and clear images. While both lenses perform well optically, the Canon lens's advanced design offers a slight edge in image quality.

Versatility

In terms of versatility, the Canon RF45mm F1.2 is suitable for a range of applications, from portraits to everyday narratives. Its wide aperture allows for creative depth of field control and excellent subject isolation. Conversely, the VILTROX 20mm f2.8 FE serves as a prime wide-angle lens, ideal for landscape and architectural photography. The 20mm focal length opens up expansive views, making it a great tool for capturing vast scenes. Depending on your photography style, the choice between the two lenses will largely depend on your specific needs—whether you prioritize versatile shooting or expansive landscape framing.

Price Difference

The pricing between the two lenses is significant, with the Canon RF45mm F1.2 STM retailing at $469.00, while the VILTROX 20mm f2.8 FE is priced at $176.00. This represents a price difference of about 62%, making the VILTROX a more budget-friendly option. For photographers just starting or those who require a wider angle without breaking the bank, the VILTROX lens presents a compelling value proposition. However, for those seeking superior aperture performance and optical quality, the investment in the Canon may be justified.

Which should you buy?

The choice between the Canon RF45mm F1.2 STM and the VILTROX 20mm f2.8 FE ultimately depends on your photography needs and budget. If you require a high-performance lens with exceptional low-light capabilities and beautiful bokeh, the Canon RF45mm is worth the investment. However, if you are looking for a lightweight, versatile lens for wide-angle shots at a significantly lower price, the VILTROX is an excellent option. Each lens serves its unique purpose, making them valuable tools in their own right.