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Pros Pros
  • Fast, silent, and accurate autofocus performance
  • Exceptional image sharpness and quality throughout the zoom range
  • Highly versatile zoom range with a constant f/2.8 aperture
  • Effective optical image stabilization
  • Durable, weather-sealed professional build quality
Cons Cons
  • Very high price point
  • Large and heavy physical footprint
  • Performance limitations and image quality loss with teleconverters
  • Long minimum focus distance limits close-up capabilities
  • Tripod collar lacks integrated Arca-Swiss compatibility

Launch price Launch price $9,499
Focal length & aperture Focal length & aperture 100-300mm f/2.8
Mount & coverage Mount & coverage Canon RF · Full-Frame
Stabilization Stabilization Optical IS, 5.5 stops (CIPA)
Close focus Close focus 1.8 m (0.16x)
Filter thread Filter thread 112mm
Autofocus motor Autofocus motor Nano ultrasonic
Weight & size Weight & size 2590g (5 lb 11.4 oz) · 128 x 323.4 mm (5.04 x 12.73 in)

Announcement date Announcement date April 20, 2023
Launch MSRP Launch MSRP $9,499
Lens mount Lens mount Canon RF
Image circle coverage Image circle coverage Full-Frame
Lens type Lens type Zoom
Lens line / series Lens line / series L-series

Elements Elements 23
Groups Groups 18
Special elements Special elements 1 fluorite, 1 Super UD, 3 UD
Coatings Coatings Air Sphere Coating, Super Spectra Coating
Front fluorine coating Front fluorine coating Yes

Focal length (wide) Focal length (wide) 100mm
Focal length (tele) Focal length (tele) 300mm
Max aperture Max aperture f/2.8
Minimum aperture Minimum aperture f/22
Diaphragm blades Diaphragm blades 9

Diagonal angle of view Diagonal angle of view 24° - 8°

Autofocus motor Autofocus motor Nano ultrasonic
Minimum focus distance Minimum focus distance 1.8 m
Maximum magnification Maximum magnification 0.16x
Focus mechanism Focus mechanism Internal focus

Optical stabilization (OIS) Optical stabilization (OIS) Yes
OIS rating OIS rating 5.5 stops

Aperture ring Aperture ring No
AF/MF switch AF/MF switch Yes

Weight Weight 2590g (5 lb 11.4 oz)
Maximum diameter Maximum diameter 128mm (5.04 in)
Length Length 323.4mm (12.73 in)
Filter thread Filter thread 112mm
Weather sealing Weather sealing Full weather sealing
Internal zoom Internal zoom Yes
Tripod collar Tripod collar Included

Lens hood Lens hood ET-124, included
Teleconverter compatibility Teleconverter compatibility 1.4x and 2.0x