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Canon RF 400mm f2.8 L IS USM lens

Canon RF 400mm f2.8 L IS USM lens

Product Code: 1242159L

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Capture beautiful wildlife, sports and action photos in any light with the new Canon RF 400mm f/2.8L IS USM Lens featuring 5 stop IS and a dual power focus drive system with full time MF override.


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We Love

  • Bright f/2.8 aperture with 9-blades for low light mastery and excellent subject isolation
  • Dual power focus drive provides faster AF and subject tracking with compatible cameras
  • Legendary L-series weather sealed build quality with heat-reflecting white finish
  • Fluorite and Super UD glass plus ASC and Super Spectra coatings deliver impeccable results
  • Up to 5 stops of shake compensation ideal for hand holding in a variety of lighting conditions
Reasons to buy from Park Cameras

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Canon RF 400mm f/2.8L IS USM Lens Summary

The arrival of the Canon RF 400mm f/2.8L IS USM Lens marks a new era of professional native super telephoto lenses for the full frame Canon mirrorless system. A combination of Fluorite and Super UD glass elements with ASC and Super Spectra coatings result in superb image quality, which will satisfy professional and enthusiast wildlife, sports and action photographers. The lens focuses quickly, quietly and confidently, even with faster moving subjects as it is assisted by a Dual Power Focus Drive, which draws extra power from any compatible camera body.

Photographers working in low light benefit from a large, bright f/2.8 aperture together with image stabilisation (IS) for up to 5 stops of compensation. Hand holding is more comfortable with the RF 400mm f/2.8L IS USM lens as it weighs just 2890g, which is the lightest professional 400mm lens available for any mirrorless system at the time of launch.

Features at a glance

  • Exceptional sharpness across the frame even wide open at f/2.8
  • The dual power focus drive provides faster AF with compatible cameras
  • Up to 5 stops of image stabilisation
  • Fluorite and Super UD glass plus ASC and Super Spectra coatings
  • L-series high build quality with weather sealing and heat-reflecting white finish
  • Compatible with RF 1.4x and RF 2x Extender

Canon has thought about versatility of the RF 400mm f/2.8L with full-time MF letting you adjust focus as well as AF start/stop buttons which are intuitively placed on the lens barrel. Even the 2.5m close focus distance provides greater flexibility for subjects nearing the photographer.

Canon RF 400mm f/2.8L IS USM Lens in More Detail

Advanced AF Capability

Advanced AF keeps any erratic and fast-moving subjects pin sharp, assisted by a dual power focus drive which delivers faster AF with compatible cameras. Full time MF is also on hand to fine tune focus without the need for toggling an AF switch.

Exceptional image quality

Canon has integrated Fluorite and Super UD glass elements into the optical design with ASC and Super Spectra coatings resulting in clear, sharp images right across the frame, even when shooting into lights.

Low light performance

The RF 400mm lens is extremely competent in low light with a large f/2.8 aperture and an image stabilisation system with 5 stops of shake compensation. Add in the fact this is the lightest pro 400mm super telephoto prime for full frame mirrorless systems and users can achieve excellent results even when hand holding as light dips.

Durable build quality

This is a lens to use whatever the weather in any situation indoors or out, as it has been designed with legendary L-series build quality and signature heat-reflecting white finish.

Dual Power Focus Drive

The RF 400mm f/2.8L mount features a second power connection referred to as a dual power focus drive system, allowing the lens to draw more current from compatible camera bodies. This extra power is used to increase the USM speed for faster focusing, letting photographers obtain initial focus more quickly and track moving objects effortlessly.

Read more about this and the RF 600mm professional primes in our blog Canon Pro RF Super Telephoto Lenses.

What’s in the box

  • RF 400mm f/2.8L IS USM Lens
  • Lens Cap E-180E
  • Lens hood ET-155(WIII)
  • Lens Soft case LS400
  • Lens Dust Cap RF
  • Compatible with RF 1

Optional Accessories


Image size Full Frame
Angle of view (horzntl, vertl, diagnl) 5°10', 3°30', 6°10'
Lens construction (elements/groups) 17/13
Special optics 2x Fluorite, 1X SUD
No. of diaphragm blades 9
Minimum aperture 32
Closest focusing distance (m) 2.5
Maximum magnification (x) 0.17
Control Ring No
Image stabilizer OIS 5.5
Image stabilizer IBIS x OIS 5.5
AF actuator Ring USM
Coatings ASC, Super Spectra
Fluorine Front / Rear
Offer Category: N/A
Offer Product Type: N/A
Autofocus: Yes
Aperture ring: N/A
Constant Aperture: Yes
Lens CIPA Image stabilization rating: N/A
Colour: N/A
Diameter (mm): 168
Length (mm): 367
Weight (g): 2890
Distance scale: N/A
DoF scale: N/A
Elements: 17
Environmental Sealing: N/A
Focus distance limiter: Yes
Focal length: 400 mm
Focus method: N/A
Filter Thread: N/A
Full time manual: Yes
Groups: 13
Hood supplied: Yes
Lens Image stabilization: N/A
Lens mount: N/A
Lens Materials: N/A
Maximum focal length: 400
Maximum magnification: 0.17
Maximum aperture (number): 2.8
Maximum aperture (text): N/A
Max Format size: N/A
Minimum focal length: 400
Lens Minimum focus distance (m): 2.5
Minimum aperture (number): 32
Minimum aperture (text): N/A
Motor type: N/A
Number of diaphragm blades: 9
Power zoom: N/A
Special elements / coatings: 1 Super UD + 2 fluorite elements, Super Spectra + ASC coatings
Tripod collar: Yes
Lens type: N/A
Wide/Tele: N/A
Lens Level: N/A
Best For: N/A
Best For Holiday and Landscape: N/A
Best For Interior and Architecture: N/A
Best For Fashion and Portrait: N/A
Best For Macro and Still Life: N/A
Best For Astro: Yes
Best For Street: N/A
Best For Wildlife and Sport: Yes
Zoom lock: N/A
Zoom method: N/A
Notes: N/A

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Looking to sell your Canon RF 400mm f2.8 L IS USM lens?

Our Verdict


At the time of release the Canon RF 400mm f/2.8L IS USM Lens is the lightest mirrorless 400mm lens in its class. This is significant for Canon photographers as they will be able to hand hold for longer periods when capturing beautiful wildlife, sports and action photos. Lighting conditions can be challenging for all of these subjects, but users have not only the bright f/2.8 aperture to fall back on, but also up to 5 stops of image stabilisation.

Fast moving subjects can also acquired and tracked with confidence thanks to the dual power focus drive which employs clever technology to draw extra power directly from the camera body when needed. This results in faster AF particularly when combined with Canon’s outstanding Dual Pixel Autofocus system. A full time MF override is also available for fine tuning without the need to flick any switches, along with well thought out AF start/stop buttons.

With the delayed Olympics and Euro 2020 just around the corner, pro sports photographers will definitely be eyeing up this and the RF 600mm f/4L IS USM Lens with keen interest. We also expect photographers who love outstanding imaging results for wildlife or action to consider this model as the definitive, weather sealed, professional L-Series super telephoto prime in its class.


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Condition guide

Our used products are subject to wear and tear in comparison to brand new products. This also applies to accessories that are supplied with the camera including batteries which may have a lower optimum performance level/life expectancy.

  • Like New – The equipment is in a condition as if you have just bought it from the manufacturer. The item is still considered to be ‘Like New’ even without the original packaging and accessories. The product has been fully tested and is in perfect working order. Lenses are optically clear. There may be light dust present that will not effect the imagery.
  • Excellent – The equipment should be close to being ‘Like New’ but there may be some small cosmetic blemishes that lower its grade. The product has been fully tested and is in perfect excellent order.
    • Cameras – Should have no marks on the LCD screen
    • Lenses – Should have no marks on the elements and optically clear. There may be light dust present that will not effect the imagery.
  • Very Good – The equipment may have some slight cosmetic wear to the paintwork and cosmetic blemishes  with only light signs of use and the product has been fully tested and is in great working order.
    • Cameras – The LCD screen may have small signs of wear that does not affect its display
    • Lenses – The mount of the lens will start to show signs of wear
  • Good – The equipment is showing more obvious signs of cosmetic wear and blemishes, but the product has been fully tested and is in great working order.
    • Cameras – LCD screen may have scratches or wear that is starting to affect the display.
    • Lenses – May have slight dust inside that does not affect images. The mount shows signs of use.
  • Well Used – The equipment will show significant signs of wear. The paintwork will be coming away in large areas exposing the metal work, but the product has been fully tested and is in great working order.
    • Cameras – LCD screen is heavily worn either by de-lamination or has scratches to it. Rubber grips are starting to come away from the body.
    • Lenses – The lens has dust inside that may affect images. The rubber zoom/focus ring is coming away from the barrel of the lens.

*All of our used items are listed with the accesories that are included. If they are not listed then they will not be supplied at eh epoint of purchase.

Used team

Peace of mind with our 6 month warranty

This product has been thoroughly tested by our team of photographers and we are happy to give a 6 month warranty as a result. The number of tests depends on the individual product but we are confident in this product having tested all the major functions. Anything that isn’t as you would expect, we then make a note of and show this in the condition notes on the page.

So you can be confident you are buying a great piece of kit that’s been looked after by a fellow photographer and seen many extraordinary sights, tested by our team of photographers and now looking forward to being set free to capture more great images!

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