Canon RF vs Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens
Updated July 2026 — Canon RF wins on price and weight, Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on compatibility.
The Canon RF 85mm F2 Macro IS STM lens offers advanced features and superior image quality, while the RF50mm F1.8 STM lens is a budget-friendly option with versatility. Choose based on your specific needs.
Why Canon RF is better
Macro Capability
RF 85mm offers macro features.
Image Stabilization
RF 85mm has advanced stabilization.
Bokeh Quality
RF 85mm excels in background blur.
Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better
Price
RF50mm is significantly cheaper.
Weight
RF50mm is lighter and more portable.
Versatility
RF50mm is suitable for various scenes.
Overall score
Specifications
| Spec | Canon RF | Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens |
|---|---|---|
| Focal Length | 85mm | 50mm |
| Max Aperture | f/2 | f/1.8 |
| Min Focus Dist. | 1.15ft | 1.5ft |
| Image Stabilization | Yes | No |
| Motor Type | STM | STM |
Dimension comparison
Price Comparison
When it comes to price, the Canon RF50mm F1.8 STM lens is significantly cheaper than the Canon RF 85mm F2 Macro IS STM lens. The RF50mm is priced at $219.00, whereas the RF 85mm costs $589.00, making the RF50mm about 63% less expensive. This substantial price difference makes the RF50mm an enticing option for budget-conscious photographers looking for a versatile lens without the heftier investment.
Build and Design
The RF 85mm F2 Macro IS STM lens is designed as a compact medium-telephoto lens, while the RF50mm F1.8 STM lens is a lightweight fixed focal length prime lens. Weight and size are essential for photographers on the go. The RF50mm's lightweight design makes it a convenient choice for travel and everyday photography. In contrast, the RF 85mm, while still manageable, is slightly bulkier due to its additional macro capabilities. This distinction may influence your choice depending on whether you prioritize portability or advanced features.
Aperture and Low-Light Performance
The RF 85mm F2 Macro IS STM has a bright f/2 aperture, which is excellent for creating beautiful bokeh and capturing stunning portraits. In comparison, the RF50mm also features a large f/1.8 aperture, which excels in low-light conditions and offers a similar capability for background blur. While both lenses allow for impressive low-light photography, the RF50mm's wider aperture gives it an edge in extremely dim environments, making it slightly more versatile for nighttime or indoor settings.
Focusing and Stabilization Features
The RF 85mm F2 Macro IS STM lens boasts Optical Image Stabilization that offers up to 5 stops of shake correction, making it ideal for low-light shooting and macro photography. The Hybrid IS feature compensates for angular and shift camera shake, ensuring sharp images. On the other hand, the RF50mm F1.8 STM lens utilizes a Stepping Motor (STM) that provides smooth and quiet continuous autofocus, which is essential for video recording. While the RF 85mm is more advanced in stabilization, the RF50mm still offers reliable autofocus performance suited for various shooting scenarios.
Versatility and Use Cases
The RF 85mm F2 Macro IS STM lens is designed for portraits, street photography, and macro photography, providing a maximum magnification of 0.5x and a minimum focusing distance of 1.15 feet. This versatility makes it suitable for a wide array of photography styles. Conversely, the RF50mm F1.8 STM lens is also versatile, allowing for creative composition in various genres, from portraits to landscapes. However, it does not have macro capabilities like the RF 85mm. Hence, if macro photography is a priority, the RF 85mm would be the better choice.
Compatibility with Camera Systems
Both lenses are compatible with Canon’s EOS R series mirrorless cameras. The RF 85mm F2 Macro IS STM is compatible with models such as the EOS RP, EOS R, EOS R5, and EOS R6, while the RF50mm F1.8 STM lens can be used with a broader range of EOS R models, including the EOS R100 and EOS R8. This flexibility in compatibility may influence users who own multiple models within the EOS R lineup, making the RF50mm a more versatile addition for a wider array of users.
Image Quality
In terms of image quality, both lenses are designed to deliver outstanding results. The RF 85mm F2 Macro IS STM lens focuses on high image quality, especially in portraiture and macro contexts, with features that enhance bokeh and clarity. The RF50mm F1.8 STM lens also emphasizes color balance and minimizes ghosting and flare, thanks to its optimized lens placement and coatings. Both lenses will provide excellent image quality; however, the RF 85mm may shine in scenarios where detail and background separation are paramount.
Which should you buy?
Choosing between the Canon RF 85mm F2 Macro IS STM and the Canon RF50mm F1.8 STM lens ultimately depends on your specific photography needs and budget. If you are looking for a versatile, low-cost lens that excels in various situations, the RF50mm is a solid choice at $219.00. However, if you require advanced features like macro capabilities and superior image stabilization for portrait and close-up photography, the RF 85mm, although pricier at $589.00, justifies its cost with its added benefits.

