Canon has released firmware version 1.0.8 for the Canon RF 100-300mm f/2.8L IS USM. This update imoproves tracking performance for both photography and videography applications.
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Canon also fixed an issue that lead to Err 60 related to the sleep state of the camera.
Firmware Version 1.0.8 incorporates the following 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.
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Canon RF 100-300mm f/2.8L IS USM Overview
- Full-Frame | f/2.8 to f/22
- Fast L-Series Telephoto Zoom
- Dual Nano USM AF System
- 5.5-Stop Image Stabilization
- Floating Focus Design
- Internal Zoom and Focusing Design
- Function/Focus Preset Selector Switch
- Fluorite, UD, and Aspherical Elements
- ASC, SSC, and Fluorine Coatings
- Weather-Sealed Design
Building on the legacy of the popular EF 300mm f/2.8 prime lenses, this RF 100-300mm f/2.8 maintains the quality and speed 300mm f/2.8 shooters are looking for while adding the versatility of a zoom that widens up to 100mm.
- The 100-300mm zoom design offers more versatility for tracking moving subjects, recording candid moments from a distance, and backing off from scenes a bit for a wider frame for more context.
- Despite switching to a zoom design, this lens retains the a bright and constant f/2.8 maximum aperture that excels in available lighting conditions and helps to achieve a shallow depth of field to isolate subjects against a blurred background.
- Wholly new optical design includes fluorite elements and ultra-low dispersion glass, plus one aspherical element, to achieve a higher degree of clarity and sharpness with virtually no distortion.
- Canon’s Air Sphere Coating (ASC) and Super Spectra Coating (SSC) minimizes ghosting and flare to better enable working in backlit conditions or when facing strong lighting situations.
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