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Canon RF45mm F1.2 STM vs TTArtisan Auto Focus

Updated July 2026 — Canon RF45mm F1.2 STM wins on price and build quality, TTArtisan Auto Focus wins on weight and autofocus.

The Canon RF45mm F1.2 STM excels in low-light performance and image quality, while the TTArtisan lens offers great value and versatility for casual photographers.

Why Canon RF45mm F1.2 STM is better

Low-Light Performance

f/1.2 aperture allows for superior low-light shooting.

Image Quality

Higher optical quality expected from a premium lens.

Build Quality

Robust design suitable for professional use.

Why TTArtisan Auto Focus is better

Price

Significantly cheaper at $125.

Weight

Lighter and more portable at 176g.

Versatility

Suitable for a wider range of photography styles.

Overall score

Canon RF45mm F1.2 STM
85
TTArtisan Auto Focus
70

Specifications

SpecCanon RF45mm F1.2 STMTTArtisan Auto Focus
Aperturef/1.2f/1.8
WeightN/A176g
Focal Length45mm35mm
AutofocusStandardAdvanced
Price$469.00$125.00

Dimension comparison

Canon RF45mm F1.2 STMTTArtisan Auto Focus

Price Comparison

The Canon RF45mm F1.2 STM is priced at $469.00, making it significantly more expensive than the TTArtisan Auto Focus 35mm F1.8 Mark II, which retails for $125.00. This results in a price difference of $344.00, or about 73% cheaper for the TTArtisan lens. For photographers on a budget or those who are just starting, the cost-effectiveness of the TTArtisan lens can be a compelling factor. The price gap raises questions about what justifies the higher cost of the Canon lens and whether the additional features and performance are worth the investment.

Lens Type and Versatility

When considering lens type, the Canon RF45mm F1.2 STM is a standard prime lens, while the TTArtisan Auto Focus 35mm F1.8 Mark II is an APS-C lens designed specifically for Fuji X-mount cameras. The Canon lens offers a focal length of 45mm, which is ideal for portraits and provides a somewhat versatile field of view. In contrast, the TTArtisan lens has a focal length equivalent to 53mm on full-frame cameras, making it suitable for a range of photography styles, including portraits and landscapes. This versatility makes the TTArtisan lens a practical choice for photographers who want a single lens to cover various shooting scenarios.

Aperture and Low-Light Performance

The Canon RF45mm F1.2 STM boasts an impressive f/1.2 aperture, enabling exceptional low-light performance and the ability to create beautiful bokeh effects. This is particularly beneficial for portrait photographers who wish to isolate their subjects from the background. On the other hand, the TTArtisan Auto Focus 35mm F1.8 Mark II has a maximum aperture of f/1.8, which, while still suitable for low-light conditions, does not match the Canon’s capability. The difference in aperture size may be a crucial factor for professionals or enthusiasts who prioritize low-light shooting and artistic background blur.

Build Quality and Design

Considering build quality, the Canon RF45mm F1.2 STM is designed with a large-diameter mount and short back focus, contributing to a compact and reasonably priced lens for its performance level. The lens also incorporates a PMo aspheric lens to reduce aberrations. The TTArtisan lens, weighing only 176g, is compact and convenient for on-the-go shooting. However, it is important to note that while the Canon lens offers a robust design for professional use, the TTArtisan lens's lightweight construction makes it ideal for casual photographers or those who prefer a travel-friendly option.

Autofocus Technology

The TTArtisan Auto Focus 35mm F1.8 Mark II features advanced autofocus technology with a stepping motor, ensuring smooth and quiet focusing, which is essential for everyday shooting scenarios. This lens also offers an improved minimum focusing distance of 0.4m, allowing photographers to capture fine details in close-up shots. In contrast, the Canon RF45mm F1.2 STM does not highlight its autofocus capabilities in the provided data, which may suggest a more traditional focusing mechanism. For those who prioritize fast and accurate autofocus, the TTArtisan lens may offer a more appealing choice, particularly in dynamic shooting situations.

Target Audience

The Canon RF45mm F1.2 STM is tailored for serious photographers and professionals who demand high-quality optics and performance. Its features cater to those who often shoot in low-light environments or require stunning background separation for portraits. Conversely, the TTArtisan Auto Focus 35mm F1.8 Mark II seems to target a broader audience, including hobbyists and beginners who appreciate a good balance of quality and affordability. The lens’s versatility and lower price point make it an attractive option for those looking to expand their photographic toolkit without breaking the bank.

Image Quality and Performance

While specific image quality comparisons are not provided, the Canon RF45mm F1.2 STM is positioned as a premium lens. Its large aperture and advanced optical design are likely to yield superior image quality, particularly in challenging lighting conditions. The TTArtisan lens, while commendable in its own right with a f/1.8 aperture, may not achieve the same level of sharpness and clarity as the Canon lens. This potential difference in image quality is essential for photographers who prioritize top-tier performance in their work, especially in professional settings.

Which should you buy?

Ultimately, the choice between the Canon RF45mm F1.2 STM and the TTArtisan Auto Focus 35mm F1.8 Mark II depends on your specific needs and budget. If you are a professional or an enthusiast seeking exceptional low-light performance and outstanding image quality, the Canon lens could be worth the investment at $469.00. However, if you are a casual photographer or someone looking for a versatile and affordable lens for everyday shooting, the TTArtisan lens at $125.00 offers great value without sacrificing essential features.