Lens
2
Focal length
20–50mm
• APS-C sensor cameras zoom range: approx. 32–80mm (equivalent)
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Zoom method
Power zooming (lens zoom ring at [W — T] position
Manual zooming (lens zoom ring set to 20mm – 50mm zoom position • Lock switch on side of lens to move zoom ring into or out of Power Zoom position
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Zooming always performed via two zoom-dedicated Nano USM motors, even at manual zoom setting
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Aperture
Max: f/4 Min: f/22
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Lens mount
Canon RF mount
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Optical Design
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Lens construction
13 elements in 11 groups
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Special elements
(three) Ultra-low Dispersion (UD-glass) elements
(two) Aspheric elements
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Lens coatings
Super Spectra Coating (SSC)
Air Sphere Coating (ASC), on inner surface of front lens element
Fluorine Coating (on front lens element)
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Filter size (diameter)
67 mm
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Image Stabilization
13
Image Stabilization
Yes
• Optical correction alone: 6.0 stops correction, at center1
• Optical + IBIS coordinated IS: 8.0 stops at center / 8.0 stops at corners2
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1: At 50mm, in yaw/pitch directions, using EOS R8 camera — CIPA 2024 standard
2: At 50mm, in yaw/pitch/roll directions, using EOS R1 camera — CIPA 2024 std
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Autofocus
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Focus drive system
Nano USM; direct linear drive
• One Nano USM motor used for focus drive
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Full-time Manual focusing
Yes
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Dimensions, Weight
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Maximum outer diameter x Length
approx. 3.15 in. Ø x 3.9 in. / 79.9mm Ø x 98.4mm
• With Lens Hood EW-73H attached —
approx. 3.50 in. Ø x approx. 5.0 in. / 89.0mm Ø x approx. 128mm
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Weight
approx. 14.8 oz. / 0.9 lb. / 420g
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