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RF100-400mm F5.6-8 IS USM Lens


Item Code: 5050C002AA


Compact, lightweight and high-image quality RF tele zoom lens, with a versatile zoom range of 100-400mm

The travel-friendly size and weight (similar in size to the EF 70-300mm F4.5-5.6 IS II USM lens but a bit lighter) of this lens makes it easier for it to be attached with a camera around your neck while walking around for an extended time and also allows room for more lenses in a camera backpack.

Optical Image Stabilizer with up to 5.5 Stops* of shake correction

Because RF lenses are designed specifically for the RF Mount found on EOS R series cameras, the lens and camera combine to share Image Stabilization data, helping to dramatically reduce the effect of camera shake that can occur when working handheld. This applies when capturing both stills and video with up to 5.5 stops of stabilization* for accurate and clear content.

Up to 6 stops of shake correction** when paired with EOS R series cameras featuring In-Body Image Stabilizer (IBIS)

This IS enabled lens can provide even more steadiness when shooting, up to 6 stops of coordinated IS, if paired with an EOS R Series camera featuring In-Body Image Stabilization, such as the EOS R5 and EOS R6, to further help you capture impressively clear results with slower shutter speeds.

Minimum focusing distance of 2.89 feet at 200mm and maximum magnification of 0.41x at 400mm

With a minimum focusing distance of 2.89 feet at 200mm, the RF100-400mm F5.6-8 IS USM lens is capable of capturing sharp and detailed images from various distances. Especially noteworthy is the lens’s close-up capabilities at the 400mm zoom setting — at its minimum focus distance, at 400mm, you can fill the frame with a subject about the size of a credit card providing outstanding versatility and strikingly sharp images.

High speed, smooth and quiet autofocus with Canon’s Nano USM

With any Canon EOS R-series camera, expect swift and positive autofocus. The Nano USM focus system is especially advantageous to video users, because of its combination of quiet operation and outstanding smoothness of focus changes during actual recording.

9-blade circular aperture for beautiful bokeh

Getting a smooth and natural looking out-of-focus background blur isn’t a problem for this lens as it has a 9-blade circular aperture which separates your subject from the background, while also providing a beautiful backdrop that's visually appealing in itself.

Control Ring for direct setting changes

The RF100-400mm F5.6-8 IS USM lens incorporates a Control Ring on the lens barrel that can directly adjust numerous settings including shutter speed, aperture, ISO, exposure compensation and more. Located towards the front of the lens it effectively adds a third dial to EOS R and RP cameras, and a fourth dial to cameras such as EOS R5 and R6 cameras. With a tactile, easily distinguished surface and a clicking mechanism that provides tangible feedback for confident use while looking through the viewfinder, the control ring adds outstanding connection to any shooting scenario. For photographers and movie makers who would prefer a silent control ring, the clicking mechanism can be removed at a Canon Factory Service Center location for a fee.

Compatible with optional Canon Extenders RF1.4x^ and RF2x^^

To help get you even closer to the subject, attach the compatible optional Canon RF extenders to the RF100-400mm F5.6-8 IS USM and get the equivalent of 560mm focal length coverage with the Extender RF1.4x, or 800mm using the Extender RF2x. In fact, the RF100-400mm F5.6-8 IS USM is the first non-L-series Canon lens with tele extender compatibility, helping transform the lens into an incredibly powerful telephoto combination, with relatively modest additional size and weight. This added flexibility and versatility helps make the RF100-400mm F5.6-8 IS USM an amazing option for nature photography and more.


Focal Length


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

(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

Compatible with Canon Extender RF1.4x / RF2x


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

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


Aperture Blades

9; circular shape

Focusing Drive System

Nano USM; rear focusing system

Full-time Manual Focusing

Yes (Lens Electronic MF)

Dual Pixel CMOS AF Coverage (Horizontal x Vertical)

Approx. 88% x 100%
• With Extender RF1.4x - approx. 80% x 80%
• With Extender RF2x - approx. 40% x 60%

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%

IS on–off

Image Stabilizer switch, on lens barrel

Optical Image Stabilization

• 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)

• 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)


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

• Distance scale available in EVF or Live View LCD screen of compatible EOS R cameras

Distance Limiter Switch


Dust / Weather Resistant Construction


Maximum Outer Diameter x Length

Approx. 6.48 in. x ø3.13 in. (164.7 x ø79.5mm)


Approx. 22.4 oz. / 1.4 lb. / 635g

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)

RF100-400mm F5.6-8 IS USM

RF100-400mm F5.6-8 IS USM
  • RF100-400mm F5.6-8 IS USM
  • Lens Cap E-6711
  • Lens Dust Cap RF

Compatible Supplies & Accessories

Canon offers a wide range of compatible supplies and accessories that can enhance your user experience with you RF100-400mm F5.6-8 IS USM Lens that you can purchase direct. Scroll down to easily select items to add to your shopping cart for a faster, easier checkout. Visit the Canon Online Store



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Sample Images

More Details

More Details

*ISO speed is based on recommended exposure index.

This is to make Misc appear on the page when needed.


* Based on CIPA (Camera & Imaging Products Associations) standards. Testing performed at focal length of 400mm, using the EOS R camera.
** Based on CIPA (Camera & Imaging Products Associations) standards. Testing performed at focal length of 400mm, using the EOS R5 camera.
^ A focal length range of 140mm (wide) through 560mm (tele) is possible to be achieved using the Extender RF1.4x.
^^ A focal length range of 200mm (wide) through 800mm (tele) is possible to be achieved using the Extender RF2x.

† Prices and specifications subject to change without notice. Actual prices are determined by individual dealers and may vary.

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