Lens
Focal Length 100-400mm
Maximum and Minimum Aperture
(Max.) f/5.6 – f/8 (f/8 at 400mm position)
(Min.) f/32 – f/45 (f/45 at 400mm position)
Lens Mount Type RF Mount; Metal Mount
Minimum Focusing Distance
3.94 feet (1.2m) at 100mm
2.89 feet (0.88m) at 200mm
3.44 feet (1.05m) at 400mm
Maximum Magnification 0.41x, at 400mm (0.09x at 100mm)
Field of View, at Minimum Focus Distance
Approx.
(100mm) — 10.2 x 15.2 in. (260 x 386mm)
(400mm) — 2.2 x 3.3 in. (57 x 85mm)
Angle of View (Diagonal) Approx. 24° – 6°10"
Extender RF Compatibility
Compatible with Canon
Extender RF1.4x / RF2x
Yes
Equivalent Focal Length /
Maximum Aperture
• RF1.4x — 140mm–560mm, f/8–11
• RF2x — 200–800mm, f/11–16
Maximum Close-focusing Magnification
• RF1.4x — 0.12x – 0.58x
• RF2x — 0.18x – 0.83x
Autofocus with EOS R Series Cameras
(as of September, 2021)
Possible with either extender, at all zoom settings
Image Stabilizer, with EOS R series
Cameras (as of September, 2021)
Possible with either extender, at all zoom settings
Optical Design
Lens Construction 12 elements in 9 groups
Special Elements
• (One) UD-glass element
• (One) Aspherical element
Lens Coating • Canon SSC (Super Spectra Coating)
Filter Size Diameter Ø67mm
Aperture Blades 9; circular shape
Focusing
Focusing Drive System Nano USM; rear focusing system
Full-time Manual Focusing Yes (Lens Electronic MF)
Specifications
RF100mm-400mm F5.6-8 IS USM
Dual Pixel CMOS AF Coverage
(Horizontal x Vertical)
EOS R, EOS RP
Approx. 88% x 100%
• With Extender RF1.4x — approx. 80% x 80%
• With Extender RF2x — approx. 40% x 60%
EOS R5, EOS R6
Approx. 90% x 100%
Face+Tracking horizontal: approx. 100% x 100%
• With Extender RF1.4x — approx. 80% x 80%
• With Extender RF2x — approx. 40% x 60%
Image Stabilization
IS on–off Image Stabilizer switch, on lens barrel
Optical Image Stabilization
Provided
• 5.5 stops optical IS correction (at 400mm)
• Conforms to CIPA test standards, using EOS R
Coordinated IS
(with EOS R-series cameras having
In-Body Image Stabilization)
Provided
• 6 stops Coordinated IS correction (at 400mm)
• Conforms to CIPA test standards, using EOS R-series cameras with In-Body
Image Stabilization
IS Mode Selection None (Automatic switching to panning correction IS, when panning is detected)
Panning Mode Support (SCN mode) Supported
Exterior Design
Control Ring
Provided (with click-stops)
• Programmable via “Customize Dials†in camera’s Custom Functions menu
• 58 clicks per revolution
• Clicks can be removed by Canon service center, for a service fee
Manual Focus Ring
Electronic ring system
• Full-time Manual focus possible
• No physical limit to ring rotational angle
Distance Scale
None
• Distance scale available in EVF or Live View LCD screen of compatible EOS R
cameras
Distance Limiter Switch None
Dust / Weather Resistant Construction None
Dimensions, Weight
Maximum Outer Diameter x Length Approx. 6.48 in. x ø3.13 in. (164.7 x ø79.5mm)
Weight Approx. 22.4 oz. / 1.4 lb. / 635g
Accessories
Lens hood
Canon ET-74B
• Optional accessory, sold separately
Lens Cap
(Front) Canon E-67 II (center pinch-type) (Bundled)
(Rear) Canon Dust Cap RF
Dust Cap Canon Lens Dust Cap RF (Bundled)
Lens Case
Canon Lens Case LP-1224
• Optional accessory, sold separately
Extension Tubes None (No Canon RF mount extension tubes)
Close-up Lenses 250D / 500D None (no 67mm size available)