Canon RF 100-500mm vs 75-300mm for EOS R5 II
By Foto Erhardt | Kameras, Objektive & Zubehör ► günstig kaufen | Published: 2026-10-30
Category: Comparisons
Compare the Canon RF 100-500mm f4.5-7.1L IS USM and the budget RF 75-300mm f4-5.6 for wildlife photography with the EOS R5 II. See image quality, reach, and value tradeoffs.
Quick answer
For dedicated wildlife shooting on the EOS R5 II, the Canon RF 100-500mm f4.5-7.1L delivers superior reach, sharpness, and build. The RF 75-300mm f4-5.6 is a lightweight, affordable option for casual telephoto use, but its optical performance and lack of stabilization limit its usefulness in low light or with fast-moving subjects.
Image quality and reach
The RF 100-500mm L-series lens offers a longer reach and professional-grade optics, delivering excellent contrast and sharpness throughout its zoom range. Its 5-stop optical image stabilizer helps capture steady handheld shots at 500mm, which is crucial for wildlife. The RF 75-300mm, while more compact, lacks image stabilization and its maximum aperture narrows at the long end, making it harder to freeze action in dim conditions.
Both lenses cover the telephoto range, but the 100-500mm provides a meaningful advantage for distant subjects like birds or shy mammals. The 75-300mm is better suited for daytime, closer wildlife such as park animals or family sports.
Autofocus and handling
The RF 100-500mm uses a Dual Nano USM motor for fast, near-silent autofocus that keeps up with erratic wildlife movement. Its weather-sealed construction lets you shoot in light rain or dust without worry. The RF 75-300mm relies on a simpler STM motor, which is adequate for static or slow-moving subjects but may hunt during fast action sequences.
Both lenses are relatively lightweight for their class, but the 75-300mm is noticeably lighter and more portable for casual hikes where every gram counts.
Tradeoffs at a glance
- Reach and sharpness: The RF 100-500mm reaches 500mm with L-series optics; the 75-300mm tops out at 300mm with softer edges.
- Image stabilization: The 100-500mm includes 5-stop IS; the 75-300mm has no stabilization, requiring faster shutter speeds or a tripod.
- Autofocus speed: Dual Nano USM on the 100-500mm tracks action reliably; STM on the 75-300mm is slower and may struggle with erratic wildlife.
- Build and weather sealing: L-series lens is dust- and splash-resistant; the 75-300mm lacks weather sealing, limiting use in adverse conditions. If you often shoot in light rain or dusty environments, the 100-500mm is more reliable.
- Price and portability: The 75-300mm costs a fraction of the 100-500mm and is lighter for casual carry. Budget-conscious photographers who shoot only in good light may find the 75-300mm sufficient.
Product facts
- Canon RF 100-500mm f4,5-7,1L IS USM: Compact and light telezoom with 5-stop optical image stabilizer and Dual Nano USM autofocus. You can shoot handheld at 500mm in lower light and track moving wildlife with fast, quiet focus.
Canon RF 100-500mm f4,5-7,1L IS USM - Canon RF 75-300mm f4-5,6: Lightweight and affordable telezoom with a 75-300mm range for the RF mount. It offers an entry point into telephoto photography without a big investment, but lacks stabilization and top-end sharpness for demanding wildlife work.
Canon RF 75-300mm f4-5,6
Which lens fits your style?
Best for
- Wildlife enthusiasts who need maximum reach, sharpness, and stabilization for birds, mammals, and action.
- EOS R5 II users who want a professional-grade telezoom that handles low light and fast autofocus.
Not for
- Budget shooters who occasionally photograph nearby wildlife or sports in bright conditions.
- Hikers who prioritize minimal weight and size over ultimate image quality.
