Canon RF45mm F1.2 STM vs VILTROX
Updated July 2026 — Canon RF45mm F1.2 STM wins on image quality and aperture, VILTROX wins on price and autofocus.
The Canon RF45mm F1.2 STM excels in low-light performance and image quality, while the VILTROX 25mm F1.7 E offers great value for budget-conscious photographers.
Why Canon RF45mm F1.2 STM is better
Aperture
Canon has a wider f/1.2 aperture.
Image Quality
Canon's optical design reduces aberrations effectively.
Low-Light
Canon performs better in low-light conditions.
Why VILTROX is better
Price
VILTROX is significantly cheaper.
Autofocus
VILTROX has fast, near-silent autofocus.
Versatility
VILTROX is suitable for various photography styles.
Overall score
Specifications
| Spec | Canon RF45mm F1.2 STM | VILTROX |
|---|---|---|
| Aperture | f/1.2 | f/1.7 |
| Focal Length | 45mm | 38mm |
| Weight | 1.5 lbs | 0.9 lbs |
| Focus Type | Manual/Auto | Auto |
| Elements | 1 PMo | 12 elements |
Dimension comparison
Overview of the Lenses
When considering prime lenses for photography, the Canon RF45mm F1.2 STM and the VILTROX 25mm F1.7 E offer distinct advantages tailored to different user needs. The Canon lens is positioned at $469.00, while the VILTROX lens is approximately 17% cheaper at $176.00. This price difference reflects their target audiences and intended use cases, with the Canon lens catering to professionals seeking high-quality, low-light performance and the VILTROX lens appealing to budget-conscious creators.
Aperture and Low-Light Performance
The Canon RF45mm F1.2 STM boasts an impressive f/1.2 aperture, allowing for remarkable low-light performance and the ability to create a soft bokeh effect that separates subjects from their backgrounds. This wide aperture is particularly beneficial for portrait photography, as it enhances subject isolation and depth. In contrast, the VILTROX 25mm F1.7 E features a slightly narrower f/1.7 aperture. While it still provides excellent low-light capabilities, it may not achieve the same level of subject isolation as the Canon lens. Nonetheless, the VILTROX lens is versatile enough for various photography styles, including street photography and creative shots.
Focal Length and Field of View
The Canon RF45mm F1.2 STM offers a standard focal length of 45mm, which is ideal for a range of photography styles, particularly portraits and lifestyle shots. This focal length provides a natural perspective that closely mimics human vision. On the other hand, the VILTROX 25mm F1.7 E, with its 38mm equivalent focal length (due to its APS-C design), is better suited for capturing wider scenes. This makes it an excellent choice for landscapes and street photography. Each lens serves different creative purposes based on their focal lengths, allowing photographers to choose according to their specific shooting needs.
Autofocus and Usability
Autofocus performance can significantly impact the shooting experience, especially for dynamic subjects. The Canon RF45mm F1.2 STM does not specify autofocus technology, but its design focuses on delivering high-quality images with minimal aberrations. In contrast, the VILTROX 25mm F1.7 E is equipped with a new STM motor, which provides fast, precise, and near-silent autofocus. This feature is particularly advantageous for video recording, as it minimizes focus breathing and ensures smooth transitions. Photographers focused on video work may find the VILTROX lens more appealing due to its advanced autofocus capabilities.
Optical Design and Image Quality
The optical design of these lenses plays a crucial role in determining image quality. The Canon RF45mm F1.2 STM includes one PMo aspheric lens to reduce aberrations, marking a first for Canon in a f/1.2 lens. This design choice contributes to its exceptional image quality, particularly in challenging lighting conditions. Conversely, the VILTROX 25mm F1.7 E features a sophisticated design with 12 elements in 10 groups, including 2 High Refractive elements and 1 Extra-low Dispersion element. This complex arrangement effectively minimizes chromatic aberrations and flare, ensuring sharp and vivid images across various shooting scenarios. Both lenses excel in optical performance but cater to different user preferences.
Build Quality and Design
Build quality and user-friendliness are essential factors in choosing a lens. The Canon RF45mm F1.2 STM is designed as a compact and reasonably priced option for creators, making it an attractive choice for those looking for a high-end lens without excessive bulk. The VILTROX 25mm F1.7 E also boasts thoughtful design details, including an extended lens hood to combat stray light and a USB-C upgrade port for firmware updates. This attention to usability enhances the overall shooting experience, particularly for photographers who may need to adapt to new camera models. Both lenses are built with the user in mind, yet the VILTROX lens provides added flexibility with its firmware compatibility.
Price and Value
The price difference between these two lenses is quite significant, with the Canon RF45mm F1.2 STM retailing for $469.00 compared to the VILTROX 25mm F1.7 E at $176.00. This approximately 62% price difference reflects the Canon lens's more advanced features and performance capabilities, making it a suitable investment for professionals. However, the VILTROX lens offers great value for photographers on a budget or those just starting, delivering solid performance without breaking the bank. Understanding your budget and intended use will be crucial in determining which lens offers the best value for your needs.
Which should you buy?
In deciding between the Canon RF45mm F1.2 STM and the VILTROX 25mm F1.7 E, your choice will largely depend on your specific photography needs and budget. The Canon lens is ideal for professionals who prioritize low-light performance and image quality, while the VILTROX lens serves as a fantastic, budget-friendly option for hobbyists and those seeking versatility in their photography. Ultimately, both lenses offer unique advantages, so consider your shooting style and financial constraints before making a decision.

