Canon RF75- vs lightdow EF
Updated July 2026 — Canon RF75- wins on focus speed and focal range, lightdow EF wins on image quality.
The Canon RF75-300mm offers versatility and advanced features, while the EF 85mm f1.8 provides excellent value for portrait photography. Choose based on your specific needs.
Why Canon RF75- is better
Versatility
RF75-300mm has a zoom range of 75mm to 300mm.
Portability
RF75-300mm is lightweight and compact.
Focus Technology
RF75-300mm features Servo AF for precise focusing.
Why lightdow EF is better
Price
EF 85mm is significantly cheaper.
Bokeh Quality
EF 85mm has a larger aperture for better background blur.
Compatibility
EF 85mm works with a wider range of Canon DSLRs.
Overall score
Specifications
| Spec | Canon RF75- | lightdow EF |
|---|---|---|
| Max Aperture | f4-5.6 | f1.8 |
| Focal Length | 75-300mm | 85mm |
| Mount Type | RF | EF |
| Focus Type | Auto | Manual |
| Price | $239.00 | $77.59 |
Dimension comparison
Overview of the Canon RF75-300mm F4-5.6 Zoom Lens
The Canon RF75-300mm F4-5.6 Zoom Lens is priced at $239.00, making it a versatile option for photography enthusiasts. This lens offers a broad focal range of 75mm to 300mm, allowing for striking captures of distant subjects. Weighing about the same as a 500ml water bottle, it emphasizes portability without sacrificing performance. With features such as Servo AF, this lens ensures precise eye detection, making it particularly effective for portrait and action photography. Additionally, it comes equipped with essential accessories like a UV filter, lens cap keeper, and a cleaning kit, enhancing its value for users.
Overview of the EF 85mm f1.8 Portrait Lens
The EF 85mm f1.8 Portrait Lens is a more budget-friendly option at $77.59, making it about 67% cheaper than the Canon RF75-300mm. This lens is designed for manual focus, appealing to photographers who appreciate complete control over their shots. With an aperture of f1.8, it excels in low-light conditions and offers beautiful bokeh effects, which are crucial for portrait photography. This lens is compatible with a wide range of Canon DSLR cameras, making it a versatile choice for many users. The combination of superb image quality and affordability makes it a compelling option for those looking to enhance their photography without a significant investment.
Portability and Design
When it comes to portability, the Canon RF75-300mm stands out due to its compact and lightweight design. Weighing less than traditional telephoto lenses, it allows photographers to carry it comfortably for extended periods. The RF mount also ensures a streamlined design tailored for the EOS R series cameras. In contrast, the EF 85mm f1.8 lens is designed as a manual focus lens, which may appeal to photographers seeking a more hands-on experience. However, its non-autofocus nature could be seen as a disadvantage for those who prefer quick adjustments, especially in dynamic shooting environments.
Focal Length and Versatility
The Canon RF75-300mm offers a versatile focal length range, allowing for a variety of photography styles, from wildlife to portraits. Its ability to zoom from 75mm to 300mm provides photographers with creative flexibility in framing their shots. On the other hand, the EF 85mm f1.8 is a fixed focal length lens that excels in portrait photography but may limit versatility in other shooting scenarios. While the fixed focal length can help achieve stunning portraits, users may find themselves needing to move closer or farther from their subjects more often than with a zoom lens.
Image Quality and Performance
With a maximum aperture of f4 to f5.6, the Canon RF75-300mm is designed for sharp image quality across its entire zoom range. The Servo AF feature enhances its performance by ensuring quick and accurate focusing, especially useful for action shots. In comparison, the EF 85mm f1.8 lens boasts a larger maximum aperture of f1.8, which is advantageous in low-light situations and allows for beautiful background blur. This lens also employs advanced optical technology, including hybrid aspherical elements, to minimize aberrations and enhance image quality, making it an excellent choice for artistic portraiture.
Compatibility with Camera Systems
The Canon RF75-300mm is specifically designed for the Canon EOS R series cameras, limiting its compatibility to newer mirrorless models. Users with older Canon DSLR cameras will not be able to use this lens, which could be a significant drawback for those with existing camera systems. Conversely, the EF 85mm f1.8 has a broader compatibility range, working with numerous Canon DSLR models, including the EOS Rebel series and higher-end DSLRs. This wide compatibility makes the EF 85mm a more accessible choice for a larger audience of Canon photographers.
Price Comparison
In terms of pricing, the Canon RF75-300mm is substantially more expensive at $239.00 compared to the EF 85mm f1.8, which is priced at $77.59. This represents a price difference of $161.41, indicating that the RF75-300mm is about 308% more expensive. While the higher price of the RF75-300mm may be justified by its zoom capabilities and additional features, the EF 85mm offers a strong value proposition for those on a budget or those who require a lens primarily for portrait work.
Which should you buy?
Choosing between the Canon RF75-300mm F4-5.6 Zoom Lens and the EF 85mm f1.8 Portrait Lens ultimately depends on your photography needs. If versatility and zoom capabilities are essential, the RF75-300mm is the superior choice, albeit at a higher price point. However, if you prioritize budget and specialize in portrait photography, the EF 85mm f1.8 offers excellent image quality and manual focus control. Ultimately, your choice should align with your specific photographic style and equipment compatibility.

