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Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens vs Nikon NIKKOR Z

Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on price and aperture, Nikon NIKKOR Z wins on autofocus and focal length.

The Canon RF50mm F1.8 STM Lens offers excellent value with its lower price and wide aperture, while the Nikon NIKKOR Z 40mm f/2 provides versatility and superior autofocus for video. Ultimately, the choice depends on your specific needs.

Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better

Price

Canon is $58 cheaper

Aperture

Canon has a wider f/1.8 aperture

Weight

Canon is more lightweight

Why Nikon NIKKOR Z is better

Focal Length

Nikon offers a versatile 40mm

Autofocus

Nikon has superior video autofocus

Bokeh

Nikon's bokeh is enhanced by 9 blades

Overall score

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens
85
Nikon NIKKOR Z
78

Specifications

SpecCanon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensNikon NIKKOR Z
Max Aperturef/1.8f/2
Weight0.66 lbs0.88 lbs
Focal Length50mm40mm
Autofocus TypeSTMFast & Quiet
Bokeh Blades79

Dimension comparison

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensNikon NIKKOR Z

Overview of the Canon RF50mm F1.8 STM Lens and Nikon NIKKOR Z 40mm f/2

The Canon RF50mm F1.8 STM Lens is priced at $219.00, making it about 21% cheaper than the Nikon NIKKOR Z 40mm f/2, which retails for $276.95. Both lenses serve as prime options for their respective mirrorless camera systems, but they cater to slightly different needs and preferences in photography. The Canon lens is designed for the EOS R series, while the Nikon lens is compatible with both FX and DX format Z series cameras, providing a versatile option for a variety of shooting scenarios.

Design and Build Quality

The Canon RF50mm F1.8 STM Lens is compact and lightweight, making it an ideal choice for photographers seeking portability. Its sleek design pairs well with EOS R series cameras, ensuring that the lens does not add unnecessary bulk. In contrast, the Nikon NIKKOR Z 40mm f/2 is also compact but offers a slightly wider 40mm view, allowing for versatility in framing shots. Both lenses are well-built, but the choice may depend on the specific camera system you own and the type of photography you pursue.

Aperture and Low-Light Performance

The Canon RF50mm F1.8 STM Lens features a large f/1.8 aperture, which excels in low-light conditions and allows for stunning background blur. This is particularly beneficial for portrait and creative photography, where subject isolation is crucial. On the other hand, the Nikon NIKKOR Z 40mm f/2, while not as wide as the Canon's aperture, still performs admirably with its f/2 maximum aperture. This lens's shallow depth of field also contributes to a pleasing bokeh effect, making it suitable for various shooting situations, including street photography and landscapes.

Autofocus Capabilities

Both lenses offer impressive autofocus capabilities, but they operate differently. The Canon RF50mm F1.8 STM Lens utilizes a Stepping Motor (STM) that provides smooth and quiet continuous autofocus, making it ideal for video recording as well as photography. The Nikon NIKKOR Z 40mm f/2 features a fast and quiet autofocus system that significantly reduces focus breathing, enhancing the shooting experience during video capture. This feature makes the Nikon lens a strong candidate for videographers who require precise control during recording.

Customization and Control

Customization options are a strong point for both lenses. The Canon RF50mm features a control ring that allows for direct setting changes, providing photographers with instant access to adjustments. Conversely, the Nikon NIKKOR Z 40mm f/2 also boasts a customizable control ring, allowing users to adjust manual focus, aperture, ISO, or exposure compensation. This flexibility can enhance the shooting experience and cater to individual preferences, making both lenses appealing for creative photographers.

Image Quality and Optical Performance

The Canon RF50mm F1.8 STM Lens is designed with optimized lens placement and coatings to deliver outstanding color balance while minimizing ghosting and flare. This results in high-quality images that are sharp and vibrant. Similarly, the Nikon NIKKOR Z 40mm f/2 is engineered to provide excellent subject/background separation, enhanced by its nine rounded blade diaphragm that creates a natural bokeh effect. Both lenses offer impressive optical performance, but the choice may come down to personal preference in terms of color rendition and bokeh quality.

Price Comparison

The Canon RF50mm F1.8 STM Lens is priced at $219.00, making it a more affordable option compared to the Nikon NIKKOR Z 40mm f/2, which costs $276.95. This price difference of about $58.00 may influence budget-conscious photographers or those just starting in mirrorless photography. While both lenses provide excellent value, the Canon lens offers a slightly lower entry point into high-quality prime lenses, making it accessible for a broader audience.

Which should you buy?

Choosing between the Canon RF50mm F1.8 STM Lens and the Nikon NIKKOR Z 40mm f/2 ultimately depends on your photographic needs and the camera system you own. If you're looking for an affordable, lightweight lens with a wide aperture and excellent low-light performance, the Canon lens is an appealing choice at $219.00. However, if you prefer a versatile 40mm focal length with customizable controls and superior autofocus for video, the Nikon lens, despite being more expensive at $276.95, may be the better fit. Both lenses excel in their respective applications, making them valuable additions to any photographer's kit.