Canon RF 24-105mm F2.8 Z and RF 100-300mm F2.8 Firmware Updates
Canon has released firmware updates for its innovative, video-focused RF 24-105mm F2.8 L IS USM Z lens and the sport photographer’s dream- the RF 100-300mm f2.8 L IS USM lens - which promise enhanced autofocus performance, particularly in tracking for both video and still photography.
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Canon RF 100-300mm F2.8 Firmware Version 1.0.8 fixes and enhancements
- Improves AF tracking performance during zoom operations in still photography when used with specific cameras*1. Enhances smoothness of AF tracking during zoom operations in video recording. *1 Applicable cameras (as of February 20, 2025): EOS R1/EOS R5 Mark II If the lens’s firmware is already version 1.0.9, it is not necessary to update the firmware.
- Fixes an issue that, in rare instances, may cause Err 60 to occur when the camera is turned on or resumes operation from the [Auto Power Off] state.
Canon RF 24-104mm F2.8 Z Firmware Version 1.1.0 fixes and enhancements
- Improves AF tracking performance during zoom operations in still photography when used with specific cameras*1. Enhances smoothness of AF tracking during zoom operations in video recording.
| FEATURE and SPECS COMPARISON | |  |  |
| Model | Canon RF 24-105mm F2.8 L | Canon RF 100-300mm f2.8 |
| Lens Type | Zoom | Zoom |
| Lens Mount | Canon RF | Canon RF |
| Focal Length | 24-105mm | 100-300mm |
| Max Format | 35mm FF | 35mm FF |
| Image Stabilization | | |
| Number of Diaphragm Blades | 11 | 9 |
| Optical Elements | 23 | 23 |
| Optical Groups | 18 | 18 |
| Minimum Focus Distance | 0.45m | 1.8m |
| Max Magnification | 0.29x | 0.16x |
| Weight | 1330g | 2590g |
| Length | 199mm | 323mm |
| Diameter | 89mm | 128mm |
| Filter Thread | 82mm | 112mm |
| Weather Sealing | | |
| Aperture Ring | | |
| Price | Amazon, B&H Photo | Amazon, B&H Photo |
