Canon RF 100-400mm f/5.6-8 IS USM
The RF 100-400mm f/5.6-8 IS USM is a high-performance RF standard zoom lens engineered for Canon EOS R system mirrorless cameras. Features USM autofocus, optical image stabilization, and premium optical coatings.
The Canon RF 100-400mm f/5.6-8 IS USM stands out in the Canon RF lineup as a versatile zoom lens. Offering impressive telephoto reach, it is uniquely positioned for distant subjects.
Field tests consistently show that this lens focuses quickly and renders subjects with beautiful clarity. Driven by Canon's proven USM motor, autofocus is swift and decisive. Its built-in optical image stabilization (5.5 stops standalone / 6.0 stops coordinated with IBIS) effectively mitigates camera shake, ensuring sharper handheld shots. While lacking L-series weather sealing, its build quality remains robust and practical for everyday shooting. Specialized UD (Ultra-Low Dispersion) glass elements are employed, delivering edge-to-edge contrast and color accuracy.
Ultimately, the RF 100-400mm f/5.6-8 IS USM proves that you don't need to spend thousands to achieve incredible results on the EOS R system. It is an ideal companion to a 24-70mm standard zoom.
✅ Strengths
- Optical image stabilization (5.5 stops standalone / 6.0 stops coordinated with IBIS)
- Customizable Control Ring for aperture, ISO, or exposure compensation
⚠️ Considerations
- No professional weather-sealing gaskets (use caution in rain or dust)
Full Technical Specifications
| Lens Model | Canon RF 100-400mm f/5.6-8 IS USM |
| Lens Mount | Canon RF |
| Sensor Format | Full Frame |
| Optical Construction | 12 elements in 9 groups |
| Special Glass & Optics | 1 Ultra-Low Dispersion (UD), 1 Aspherical element |
| Min. Focus Distance | 0.88 m (2.89 ft) at 200mm / 1.05 m at 400mm |
| Max. Magnification | 0.41x (at 400mm) |
| Image Stabilization | 5.5 stops standalone / 6.0 stops coordinated with IBIS |
| Diaphragm Blades | 9 |
| Autofocus Motor | USM |
| Filter Diameter | 67 mm |
| Dimensions (D × L) | 79.5 mm (3.13 in) × 164.5 mm (6.48 in) |
| Weight | 635 g (22.4 oz) |
| Lens Hood | ET-74B |
| Release Date | 2021-09-14 |
| Series Classification | Standard |
| Estimated MSRP | $499 |
Features & Optical Technology
Recommended Photography Genres
Frequently Asked Questions
Q: Is the RF 100-400mm f/5.6-8 IS USM weather sealed?
A: No, this lens does not feature professional weather sealing. It is recommended to use caution or a rain cover when shooting in wet or dusty conditions.
Q: What size filter does the RF 100-400mm f/5.6-8 IS USM use?
A: The lens features a 67 mm front filter thread. Any circular filters (like UV, CPL, or ND) will need to match this 67 mm diameter.
Q: Is the RF 100-400mm f/5.6-8 IS USM compatible with Canon RF extenders?
A: Yes, this lens is compatible with Canon's RF 1.4x and 2x extenders, allowing you to increase the focal length for even more reach.
✓ Includes configurable electronic Control Ring for aperture, ISO, or shutter speed.