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Canon RF45mm F1.2 STM vs TTartisan

Updated July 2026 — Canon RF45mm F1.2 STM wins on price and focal length, TTartisan wins on aperture.

The Canon RF45mm F1.2 STM excels in optical performance and low-light capabilities, while the TTartisan 27mm F2.8 offers great portability and affordability.

Why Canon RF45mm F1.2 STM is better

Optical Quality

Superior low-light performance with f/1.2 aperture

Bokeh

Creates stunning bokeh effects for portraits

Build Quality

Designed for serious photographers with durability in mind

Why TTartisan is better

Price

Significantly cheaper at $159.99

Portability

Compact pancake design for easy carrying

Versatility

Ideal for various everyday shooting scenarios

Overall score

Canon RF45mm F1.2 STM
85
TTartisan
70

Specifications

SpecCanon RF45mm F1.2 STMTTartisan
Max Aperturef/1.2f/2.8
Focal Length45mm27mm
Weight0.5kg0.2kg
AutofocusNoYes
BokehExcellentGood

Dimension comparison

Canon RF45mm F1.2 STMTTartisan

Overview of the Canon RF45mm F1.2 STM and TTartisan 27mm F2.8 Autofocus Lens

The Canon RF45mm F1.2 STM lens is a standard 45mm prime lens known for its impressive f/1.2 aperture, while the TTartisan 27mm F2.8 Autofocus Lens offers a compact solution with a bright f/2.8 maximum aperture. Priced at $469.00, the Canon lens is significantly more expensive than the TTartisan, which retails for $159.99, making it about 66% more costly. The choice between these two lenses ultimately hinges on specific needs, such as low-light performance and portability.

Optical Performance

When it comes to optical capabilities, the Canon RF45mm F1.2 STM boasts a large-diameter design that enables stunning bokeh effects and excellent subject isolation. The f/1.2 aperture allows for faster shutter speeds in low-light environments, making it ideal for portrait and lifestyle photography. In contrast, the TTartisan 27mm F2.8 features a maximum aperture of f/2.8, which, while still effective in low-light conditions, does not match the low-light prowess of the Canon lens. Thus, for those prioritizing optical quality, especially in challenging lighting, the Canon lens has the upper hand.

Build Quality and Design

The Canon RF45mm F1.2 STM lens is known for its compact and reasonably priced design, especially given its large-diameter capabilities. Its effective placement of a PMo aspheric lens reduces aberrations, contributing to overall image quality. On the other hand, the TTartisan 27mm F2.8 is designed as a pancake lens, measuring less than 3cm thick, making it extremely portable. If you prioritize a lightweight and easily carryable lens, the TTartisan may appeal more to you. However, in terms of build quality, the Canon lens's design is tailored for serious photographers looking for durability and performance.

Autofocus Capabilities

The TTartisan 27mm F2.8 is equipped with autofocus, which is beneficial for users who prefer quick and precise focusing. It also features a manual focus override, providing flexibility for those wanting more control. The Canon RF45mm F1.2 STM, while not specifically mentioned in terms of autofocus features, is optimized for digital distortion correction, enhancing its usability in various photography scenarios. In this category, the TTartisan's autofocus capability may be more appealing to casual shooters or those new to photography.

Versatility in Use

The versatility of each lens can greatly influence your choice. The Canon RF45mm F1.2 STM excels in creating expressive and three-dimensional images, making it suitable for various genres, including portraiture and lifestyle photography. Its large aperture allows for creative depth-of-field manipulation. Conversely, the TTartisan 27mm F2.8 offers a 56° angle of view and an equivalent focal length of 41mm, making it ideal for street, travel, and close-up photography. If you need a lens for a wider range of everyday shooting scenarios, the TTartisan may be the more versatile option.

Price Comparison and Value

The price difference between these two lenses is substantial, with the Canon RF45mm F1.2 STM priced at $469.00, while the TTartisan 27mm F2.8 is only $159.99. This makes the TTartisan approximately 66% cheaper than the Canon lens, which can be a significant factor for those on a budget. The value offered by the TTartisan is impressive given its quality and features, especially for Fujifilm users looking for an efficient prime lens without breaking the bank.

Target Audience

The Canon RF45mm F1.2 STM is targeted toward serious photographers and content creators who demand high performance and are willing to invest in quality optics. Its features are designed for those who regularly shoot in low-light conditions and require superior image quality. On the other hand, the TTartisan 27mm F2.8 is ideal for casual photographers and those who prioritize portability and convenience. It is particularly suitable for travel and everyday use, appealing to a broader audience who may not want to invest heavily.

Which should you buy?

Ultimately, the decision between the Canon RF45mm F1.2 STM and the TTartisan 27mm F2.8 Autofocus Lens depends on your specific needs and budget. If you are seeking superior optical performance, especially in low-light situations, and are willing to invest in a higher-priced lens, the Canon option is the way to go. However, if portability, affordability, and versatility for everyday shooting are your priorities, the TTartisan presents an excellent, budget-friendly alternative.