Canon RF16mm F2.8 STM Lens vs lightdow EF
Updated July 2026 — Canon RF16mm F2.8 STM Lens wins on weight and focus, lightdow EF wins on price.
The Canon RF16mm F2.8 STM lens excels in versatility and autofocus, while the EF 85mm f1.8 Portrait Lens offers superb image quality at a lower price. Choose based on your specific needs.
Why Canon RF16mm F2.8 STM Lens is better
Versatility
Ultra-wide angle for various photography styles
Autofocus
Includes smooth autofocus for video
Portability
Lightweight design for easy travel
Why lightdow EF is better
Price
Significantly lower cost
Bokeh
Excellent background blur for portraits
Manual Control
Encourages skill development in photography
Overall score
Specifications
| Spec | Canon RF16mm F2.8 STM Lens | lightdow EF |
|---|---|---|
| Aperture | f/2.8 | f/1.8 |
| Focal Length | 16mm | 85mm |
| Compatibility | EOS R | Canon DSLRs |
| Focus Type | Autofocus | Manual |
| Minimum Focus | 5.11 in | N/A |
Dimension comparison
Overview of the Canon RF16mm F2.8 STM Lens
The Canon RF16mm F2.8 STM lens offers a bright f/2.8 maximum aperture and an ultra-wide angle of view, making it an excellent choice for landscape photography, vlogging, and capturing tight interior spaces. Priced at $259.00, this lens is designed for Canon EOS R series mirrorless cameras, delivering high image quality in a compact package. With its lightweight design and minimum focusing distance of 5.11 inches, this lens caters to both amateurs and professionals seeking versatility in their photography.
The RF16mm lens showcases Canon's commitment to image excellence, featuring a stepping motor for smooth autofocus, especially valuable during video recording. Its compact nature allows for easy portability, making it a fantastic companion for photographers who are always on the move.
Overview of the EF 85mm f1.8 Portrait Lens
The EF 85mm f1.8 Portrait Lens is a fully manual focus lens priced at $77.59, significantly more affordable than the RF16mm. This lens is compatible with a wide range of Canon DSLRs, including the EOS Rebel series and the 5D Mark IV, providing versatility for photographers using different camera systems. Known for its superb image quality, the lens features 6 rounded aperture blades that enhance the bokeh effect, making it ideal for portrait photography.
While it lacks autofocus capabilities, the manual focus design encourages photographers to develop their skills and gain greater control over their shots. This lens is particularly appealing for those who appreciate the artistry of photography and are willing to invest time in mastering manual settings.
Image Quality Comparison
The Canon RF16mm F2.8 STM lens is designed to deliver high image quality with its bright f/2.8 aperture, making it suitable for low-light conditions and detailed landscape shots. Its optical design ensures minimal distortion and excellent sharpness, which is crucial for ultra-wide-angle photography. The lens's close focusing distance enhances its versatility, allowing users to achieve impressive shots with a strong foreground and background separation.
In contrast, the EF 85mm f1.8 Portrait Lens focuses on producing sharp images with pleasing bokeh. The lens employs hybrid aspherical lens technology and ultra multi-coating to minimize aberrations, resulting in clear images. The f/1.8 aperture allows for beautiful background blur, making it an excellent choice for portraiture. While both lenses excel in their respective categories, the RF16mm may have an edge in versatility due to its ultra-wide capability.
Autofocus and Manual Focus Features
The Canon RF16mm F2.8 STM lens comes equipped with a stepping motor that provides smooth and quiet continuous autofocus, particularly beneficial for video recording. This feature allows photographers to capture spontaneous moments without the noise often associated with traditional autofocus systems. The RF16mm is ideal for those who prefer a hassle-free shooting experience without compromising on image quality.
On the other hand, the EF 85mm f1.8 Lens is a fully manual focus lens. This design allows photographers to have complete control over their focus settings, which can be a double-edged sword. While it fosters artistic creativity and encourages skill development, it may not suit everyone, especially those accustomed to autofocus systems. The absence of autofocus could challenge newer photographers, but it appeals to seasoned professionals looking for precision in their work.
Portability and Design
Weighing significantly less than many lenses in its class, the Canon RF16mm F2.8 STM lens is designed to be supremely lightweight and compact. This makes it an excellent option for travel photography, as it easily fits into a camera bag without adding much bulk. Its sleek design and durability ensure that it can withstand various shooting environments, making it a practical choice for everyday use.
Conversely, the EF 85mm f1.8 Portrait Lens, while not excessively heavy, is bulkier compared to the RF16mm. Nevertheless, it is still manageable for most photographers. Despite its larger size, the EF 85mm’s robust construction speaks to its durability and reliability, essential for portrait sessions and events.
Price Comparison
The Canon RF16mm F2.8 STM lens retails for $259.00, whereas the EF 85mm f1.8 Portrait Lens comes at a much lower price of $77.59. This difference of about 70% makes the EF 85mm a more budget-friendly option, appealing to beginners or those looking to expand their lens collection without breaking the bank.
While the RF16mm's higher price reflects its advanced features and specialized design for mirrorless cameras, the EF 85mm's affordability does not compromise its quality, particularly for portrait photography. Buyers must consider their specific needs and budget when selecting between these two options.
Use Cases and Suitability
The Canon RF16mm F2.8 STM lens is particularly well-suited for landscape photographers, vloggers, and anyone needing an ultra-wide perspective. Its f/2.8 aperture and close-focusing capabilities make it ideal for capturing expansive scenes and intricate details, perfect for both professional and personal projects.
In contrast, the EF 85mm f1.8 Portrait Lens excels in portraiture, offering superb image quality and beautiful background blur. Its manual focus design allows for artistic expression, making it ideal for photographers who appreciate the intricacies of manual settings. This lens is particularly beneficial for those who frequently work with Canon DSLRs and are looking to create stunning, high-quality portraits.
Which should you buy?
Choosing between the Canon RF16mm F2.8 STM lens and the EF 85mm f1.8 Portrait Lens ultimately depends on your photographic needs and preferences. If you are seeking an ultra-wide-angle lens with autofocus capabilities for landscapes and videos, the RF16mm is the superior choice despite its higher price. However, if you are focused on portrait photography and value manual control, the EF 85mm offers exceptional quality at a significantly lower price. Consider your shooting style, preferred subjects, and budget to make the best decision for your photography journey.

