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Canon EF vs Canon RF45mm F1.2 STM

Updated July 2026 — Canon EF wins on price, Canon RF45mm F1.2 STM wins on weight and size.

The Canon RF45mm F1.2 STM offers superior image quality and advanced features, while the Canon EF 50mm f/1.8 STM is a budget-friendly option for everyday photography.

Why Canon EF is better

Price

EF 50mm is significantly cheaper at $155.99.

Portability

EF 50mm is lighter and more compact.

Versatility

EF 50mm is suitable for a wider range of shooting scenarios.

Why Canon RF45mm F1.2 STM is better

Image Quality

RF45mm provides superior clarity and detail.

Low-Light Performance

RF45mm's f/1.2 aperture allows for better low-light shooting.

Bokeh Effects

RF45mm creates more pronounced bokeh for artistic shots.

Overall score

Canon EF
75
Canon RF45mm F1.2 STM
90

Specifications

SpecCanon EFCanon RF45mm F1.2 STM
Max Aperturef/1.8f/1.2
Focal Length50mm45mm
Min Focus Dist.1.15 ft0.98 ft
AutofocusSTMSTM
Image StabilizationNoNo
Bokeh QualityGoodExcellent

Dimension comparison

Canon EFCanon RF45mm F1.2 STM

Overview of the Canon EF 50mm f/1.8 STM Lens

The Canon EF 50mm f/1.8 STM Lens is a compact and versatile prime lens designed for everyday shooting, especially in low-light conditions. Priced at $155.99, it is significantly more budget-friendly than its competitor. This lens offers a maximum aperture of f/1.8, making it ideal for capturing portraits and dynamic scenes. The lens features a minimum focusing distance of 1.15 feet and an STM motor for quiet autofocus, enhancing its usability for both stills and video.

The combination of its affordable price and impressive capabilities positions the EF 50mm as a staple for photographers seeking a reliable lens for various shooting conditions.

Overview of the Canon RF45mm F1.2 STM

In contrast, the Canon RF45mm F1.2 STM lens is a premium option with a price tag of $469.00. It boasts an impressive maximum aperture of f/1.2, allowing for exceptional performance in low-light settings and the ability to create beautiful bokeh effects. This lens is designed with a short back focus and digital distortion correction, which contributes to its compact design despite its large aperture. The RF45mm lens is particularly well-suited for portraiture and lifestyle photography, offering a refined aesthetic straight from the camera.

The RF45mm's advanced features and superior aperture make it a compelling choice for serious photographers who prioritize image quality.

Image Quality Comparison

When it comes to image quality, the RF45mm F1.2 STM outshines the EF 50mm f/1.8 STM. The f/1.2 aperture allows for faster shutter speeds, which is crucial for capturing sharp images in darker environments. Additionally, the RF45mm's large-diameter design and innovative lens elements help to minimize aberrations, producing clearer and more vibrant images. The EF 50mm, while capable, may not achieve the same level of depth and detail, especially in challenging lighting conditions.

For photographers focused on creating visually stunning images, the RF45mm provides a noticeable advantage, elevating the quality of their work significantly.

Autofocus Performance

Both lenses feature Canon's STM technology, which ensures near-silent autofocus performance. However, the EF 50mm f/1.8 STM is particularly designed for quick and smooth focus transitions, making it ideal for capturing fast-moving subjects. Its autofocus system is optimized for both stills and video, allowing for seamless operation when shooting dynamic scenes.

On the other hand, the RF45mm F1.2 STM also offers impressive autofocus capabilities, but its primary strength lies in its ability to create a three-dimensional look through its wide aperture, which may be more beneficial for portrait and creative photography.

Portability and Design

The EF 50mm f/1.8 STM is notably more portable, thanks to its compact design and lightweight build. Weighing less and featuring a smaller size, it is an excellent choice for photographers who prioritize mobility and convenience. This makes it a great companion for travel and street photography, where carrying less gear is advantageous.

In contrast, while the RF45mm F1.2 STM is designed to be compact for a large-diameter lens, it is still bulkier and heavier than the EF 50mm. Photographers may find the RF45mm less convenient for extended outings where every ounce matters.

Price and Value

The price difference between these two lenses is substantial. The EF 50mm f/1.8 STM is priced at $155.99, making it about 67% cheaper than the RF45mm F1.2 STM, which retails for $469.00. For budget-conscious photographers or those just starting, the EF 50mm offers exceptional value without compromising too much on performance.

Conversely, the RF45mm's higher price reflects its advanced features and superior image quality. For professionals or serious enthusiasts, the investment may be justified by the enhanced capabilities and results it provides.

Target Audience

The EF 50mm f/1.8 STM is ideal for amateur photographers, hobbyists, or anyone looking for a dependable, cost-effective lens for a variety of shooting scenarios. Its versatility makes it suitable for portraits, action shots, and low-light photography, appealing to a wide audience.

In contrast, the RF45mm F1.2 STM targets more serious creators who demand high-quality imagery and are willing to invest in superior equipment. This lens is perfect for professionals who specialize in portraiture or creative projects where image quality is paramount.

Which should you buy?

Choosing between the Canon EF 50mm f/1.8 STM Lens and the Canon RF45mm F1.2 STM ultimately depends on your photography needs and budget. If you're looking for an affordable, versatile lens that performs well in various shooting conditions, the EF 50mm is an excellent choice. However, if you're a serious photographer seeking top-tier image quality and advanced features, the RF45mm justifies its higher price with its superior performance and aesthetic capabilities. Consider your priorities, and select the lens that aligns best with your photographic goals.