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Scored using Camera lenses Methodology v1.0
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Products in this category are evaluated mathematically under Frontumo Camera lenses Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
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Canon RF 400mm F 2 8L IS USM Review | 54 Data compared

Avg. price:~£12,060Lens mount:Canon RFMaximum focal length:400 mmMaximum aperture (telephoto end):2.8Optical image stabilization:yesMaximum angle of view:6.2 °

Canon RF 400mm F 2 8L IS USM Review: Compare 54 technical specifications and user reviews to see how this product ranks in the Camera lenses category and whether it is worth buying.

7.5

Overall score

Score
7.5/ 10
✕
What it is
An overall evaluation of the camera lens's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to identify the best camera lenses on the market.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 80% of models
Score components

80%

7.5

Technical score

20%

?

User score

▲Better than 80% of camera-lenses
7.5

Technical score

Technical score
7.5/ 10
✕
What it is
An assessment of technical performance for products in the Camera lenses category across these key areas: Mount & Format, Optics & Aperture, Focus & Controls, Stabilization, Build & Handling, Lab Scores.
When it matters
When you want to compare camera lenses based on technical performance and available features.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 88% of models
Score components

35%

7.7

Optics & Aperture

24%

6.9

Build & Handling

20%

6.5

Focus & Controls

10%

?

Lab Scores

8%

10

Stabilization

3%

10

Mount & Format

▲Better than 88% of camera-lenses
?

User score

User score
8.0/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the camera lens.
When it matters
When real-world owner satisfaction and review volume matter to your decision.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 71% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • No image
No image

Best prices

    N/A~ £12,060

Best rankings

Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of camera lens Canon RF 400mm F 2 8L IS USM

Technical score
Technical score
7.5/ 10
✕
What it is
An assessment of technical performance for products in the Camera lenses category across these key areas: Mount & Format, Optics & Aperture, Focus & Controls, Stabilization, Build & Handling, Lab Scores.
When it matters
When you want to compare camera lenses based on technical performance and available features.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 88% of models
Score components:

35%

7.7

Optics & Aperture

24%

6.9

Build & Handling

20%

6.5

Focus & Controls

10%

?

Lab Scores

8%

10

Stabilization

3%

10

Mount & Format

7.5
User score
User score
8.0/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the camera lens.
When it matters
When real-world owner satisfaction and review volume matter to your decision.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 71% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 10
✕
What it is
An indicator based on the number of reviews received by the camera lens.
When it matters
When you want to see which camera lenses attract the most buyer attention and review activity.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 99% of models
Popularity:
Canon RF 400mm F 2 8L IS USM has a popularity score of 1 point, which is lower than 91.7% of camera lenses.
1.0
Value for money
Value for money
5.6/ 10
✕
What it is
An indicator that combines the camera lens's overall rating with its cost.
When it matters
When you want to know how much overall quality you get for the price.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 88% of models
Score components:

60%

7.5

Overall score

40%

1.0

Price

5.6
Lens type
telephoto prime
Lens mount
Canon RF
Sensor format coverage
Full-frame
Filter thread size
N/A
Teleconverter compatibility
yes
Teleconverter compatibility
yes
▲ Better than 85% of models
This camera lens supports teleconverters. 15.2% of camera lenses support teleconverters.
Supports RF 1.4x and RF 2x extenders.
Show more
Minimum focal length
400 mm
Maximum focal length
400 mm
Optical zoom
N/A
Maximum angle of view
6.2 °
Minimum angle of view
6.2 °
Show more
Focus motor
ring USM
Minimum focus distance
2.5 m
Minimum focus distance
2.5 m
▼ Worse than 97% of models
Market range: <0.18 m – >1.1 m
This camera lens focuses as close as 2.5 m, which is farther than 97% of camera lenses and equal to 0.6% of camera lenses.
Maximum reproduction ratio
0.17xx
Maximum reproduction ratio
0.17x
▼ Worse than 57% of models
Market range: <0.11 x – >0.39 x
This camera lens reaches a reproduction ratio of 0.17x, which is lower than 56.8% of camera lenses and equal to 4.2% of camera lenses.
Full-time manual focus
yes
Full-time manual focus
yes
▲ Better than 32% of models
This camera lens supports full-time manual focus. 68.3% of camera lenses support full-time manual focus.
Internal focusing
yes
Internal focusing
yes
▲ Better than 16% of models
This camera lens supports internal focusing. 83.6% of camera lenses support internal focusing.
Show more
Optical image stabilization
yes
Optical image stabilization
yes
▲ Better than 71% of models
This camera lens supports optical image stabilization. 29% of camera lenses include optical image stabilization.
Stabilization effectiveness (CIPA stops)
5.5 stops
Stabilization effectiveness (CIPA stops)
5.5 stops
★ Better than 90% of models
Market range: <3 stops – >5.5 stops
This camera lens offers 5.5 stops of stabilization, which is stronger than 90.1% of camera lenses and equal to 6.5% of camera lenses.
Weight
3,130 g
Weight
3,130 g
▼ Worse than 98% of models
Market range: <171 g – >1.3k g
This camera lens weighs 3,130 g, which is heavier than 98% of camera lenses.
Lens length
367 mm
Lens length
367 mm
▼ Worse than 98% of models
Market range: <46 mm – >189 mm
This camera lens is 367 mm long, which is longer than 98.3% of camera lenses.
Lens diameter
163 mm
Lens diameter
163 mm
▼ Worse than 99% of models
Market range: <62.4 mm – >94.7 mm
This camera lens has a diameter of 163 mm, which is wider than 98.9% of camera lenses and equal to that of 0.4% of camera lenses.
Weather sealing (splashproof)
yes
Weather sealing (splashproof)
yes
▲ Better than 50% of models
This camera lens supports weather sealing. 50.2% of camera lenses support weather sealing.
Metal mount
yes
Metal mount
yes
▲ Better than 6% of models
This camera lens uses a metal lens mount. 93.6% of camera lenses use a metal lens mount.
Show more
DxOMark overall score
?
DxOMark sharpness score
?
DxOMark transmission
?
DxOMark distortion
?
DxOMark vignetting
?
Show more

Canon RF 400mm F 2 8L IS USM vs the average camera lens

246810TotalMount & FormatOptics & ApertureFocus & ControlsStabilizationBuild & HandlingLab Scores
  • Has optical image stabilization
    Optical image stabilization
    yes
    ▲ Better than 71% of models
    This camera lens has optical image stabilization, the average camera lens does not. 29% of camera lenses include optical image stabilization.
  • Teleconverter compatible
    Teleconverter compatibility
    yes
    ▲ Better than 85% of models
    This camera lens supports teleconverters, while the average camera lens does not.
    Supports RF 1.4x and RF 2x extenders.
  • 1.5 stops stronger stabilization
    Stabilization effectiveness (CIPA stops)
    5.5 stops
    ★ Better than 90% of models
    Market range: <3 stops – >5.5 stops
    This camera lens has a higher stabilization effectiveness than the average camera lens (5.5 stops vs 4 stops). The average lens has stabilization effectiveness of 4 stops.
    5.5 stops vs 4 stops
  • Has focus hold button
    Focus hold button
    yes
    ▲ Better than 83% of models
    This camera lens has a focus hold button, the average camera lens does not. 16.6% of camera lenses include a focus hold button.
  • Has fluorine coating
    Fluorine coating
    yes
    ▲ Better than 67% of models
    This camera lens has a fluorine coating, the average camera lens does not. 32.6% of camera lenses use a fluorine coating.
  • Has drop-in filter support
    Drop-in / rear filter
    yes
    ★ Better than 93% of models
    This camera lens supports drop-in or rear filters, while the average camera lens does not.
    52 mm drop-in filter.
  • Has focus limiter switch
    Focus limiter switch
    yes
    ▲ Better than 84% of models
    This camera lens has a focus limiter switch, the average camera lens does not. 16.4% of camera lenses include a focus limiter switch.
  • Newer release date
    Release date
    2021
    ▲ Better than 80% of models
    Market range: <2k – >2k
    This camera lens was released more recently than the average camera lens.
    2021 vs 2016
  • Teleconverter compatible
    Teleconverter compatibility
    yes
    ▲ Better than 85% of models
    This camera lens supports teleconverters, while the average camera lens does not.
    Supports RF 1.4x and RF 2x extenders.
  • Has drop-in filter support
    Drop-in / rear filter
    yes
    ★ Better than 93% of models
    This camera lens supports drop-in or rear filters, while the average camera lens does not.
    52 mm drop-in filter.
  • Has focus hold button
    Focus hold button
    yes
    ▲ Better than 83% of models
    This camera lens has a focus hold button, the average camera lens does not. 16.6% of camera lenses include a focus hold button.
  • Has focus limiter switch
    Focus limiter switch
    yes
    ▲ Better than 84% of models
    This camera lens has a focus limiter switch, the average camera lens does not. 16.4% of camera lenses include a focus limiter switch.
  • Has optical image stabilization
    Optical image stabilization
    yes
    ▲ Better than 71% of models
    This camera lens has optical image stabilization, the average camera lens does not. 29% of camera lenses include optical image stabilization.
  • 1.5 stops stronger stabilization
    Stabilization effectiveness (CIPA stops)
    5.5 stops
    ★ Better than 90% of models
    Market range: <3 stops – >5.5 stops
    This camera lens has a higher stabilization effectiveness than the average camera lens (5.5 stops vs 4 stops). The average lens has stabilization effectiveness of 4 stops.
    5.5 stops vs 4 stops
  • Has fluorine coating
    Fluorine coating
    yes
    ▲ Better than 67% of models
    This camera lens has a fluorine coating, the average camera lens does not. 32.6% of camera lenses use a fluorine coating.
  • Newer release date
    Release date
    2021
    ▲ Better than 80% of models
    Market range: <2k – >2k
    This camera lens was released more recently than the average camera lens.
    2021 vs 2016
  • 2,620 g heavier
    Weight
    3,130 g
    ▼ Worse than 98% of models
    Market range: <171 g – >1.3k g
    This camera lens is heavier than the average camera lens (3130 g vs 510 g). The average lens weighs 510 g.
    3,130 g vs 510 g
  • 274.75 mm longer lens
    Lens length
    367 mm
    ▼ Worse than 98% of models
    Market range: <46 mm – >189 mm
    This camera lens is longer than the average camera lens (367 mm vs 92.25 mm). The average lens has a length of 92.25 mm.
    367 mm vs 92.25 mm
  • 2 fewer aspherical elements
    Aspherical elements
    0
    ▼ Worse than 70% of models
    Market range: <0 – >3
    This camera lens has fewer aspherical elements than the average camera lens (0 vs 2). The average lens has 2 aspherical elements.
    0 vs 2
  • 86 mm wider lens barrel
    Lens diameter
    163 mm
    ▼ Worse than 99% of models
    Market range: <62.4 mm – >94.7 mm
    This camera lens is wider than the average camera lens (163 mm vs 77 mm). The average lens has a diameter of 77 mm.
    163 mm vs 77 mm
  • 2.2 m longer minimum focus distance
    Minimum focus distance
    2.5 m
    ▼ Worse than 97% of models
    Market range: <0.18 m – >1.1 m
    This camera lens has a higher minimum focus distance than the average camera lens (2.5 m vs 0.3 m). The average lens has a minimum focus distance of 0.3 m.
    2.5 m vs 0.3 m
  • 1 fewer low-dispersion elements
    Low-dispersion elements
    1
    ▼ Worse than 55% of models
    Market range: <0 – >4
    This camera lens has fewer low-dispersion elements than the average camera lens (1 vs 2). The average lens has 2 low-dispersion elements.
    Also includes 2 fluorite elements.
    1 vs 2
  • 22.75x more expensive
    Canon RF 400mm F 2 8L IS USM is more expensive than the average camera lens (£12,060 vs £530).
    £12,060 vs £530
  • 7.29x less popular
    Canon RF 400mm F 2 8L IS USM is less popular than the average camera lens (1 vs 7.3).
    1 vs 7.29
  • 22.75x more expensive
    Canon RF 400mm F 2 8L IS USM is more expensive than the average camera lens (£12,060 vs £530).
    £12,060 vs £530
  • 7.29x less popular
    Canon RF 400mm F 2 8L IS USM is less popular than the average camera lens (1 vs 7.3).
    1 vs 7.29
  • 23.3% worse value for money
    Canon RF 400mm F 2 8L IS USM has a worse value-for-money score than the average camera lens (5.58 vs 6.9).
    5.58 vs 6.89
  • 4.5% lower user score
    User score
    8.0/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the camera lens.
    When it matters
    When real-world owner satisfaction and review volume matter to your decision.
    Score distribution
    ▼
    ▼
    <55-66-77-88-99-10
    Canon RF 400mm F 2 8L IS USM
    the average camera lens
    Canon RF 400mm F 2 8L IS USM has a lower user score than the average camera lens (8.00 vs 8.360).
    8 vs 8.36
  • 2 fewer aspherical elements
    Aspherical elements
    0
    ▼ Worse than 70% of models
    Market range: <0 – >3
    This camera lens has fewer aspherical elements than the average camera lens (0 vs 2). The average lens has 2 aspherical elements.
    0 vs 2
  • 1 fewer low-dispersion elements
    Low-dispersion elements
    1
    ▼ Worse than 55% of models
    Market range: <0 – >4
    This camera lens has fewer low-dispersion elements than the average camera lens (1 vs 2). The average lens has 2 low-dispersion elements.
    Also includes 2 fluorite elements.
    1 vs 2
  • 2 fewer fluorite elements
    Fluorite elements
    2
    ★ Better than 98% of models
    Market range: <0 – >0
    This camera lens has fewer fluorite elements than the average camera lens (2 vs 0). The average lens has 0 fluorite elements.
    2 vs 0
  • 2.2 m longer minimum focus distance
    Minimum focus distance
    2.5 m
    ▼ Worse than 97% of models
    Market range: <0.18 m – >1.1 m
    This camera lens has a higher minimum focus distance than the average camera lens (2.5 m vs 0.3 m). The average lens has a minimum focus distance of 0.3 m.
    2.5 m vs 0.3 m
  • 0.02 x lower maximum reproduction ratio
    Maximum reproduction ratio
    0.17 x
    ▼ Worse than 57% of models
    Market range: <0.11 x – >0.39 x
    This camera lens has a lower maximum reproduction ratio than the average camera lens (0.2 x vs 0.2 x). The average lens has a maximum reproduction ratio of 0.192 x.
    0.17 x vs 0.192 x
  • 2,620 g heavier
    Weight
    3,130 g
    ▼ Worse than 98% of models
    Market range: <171 g – >1.3k g
    This camera lens is heavier than the average camera lens (3130 g vs 510 g). The average lens weighs 510 g.
    3,130 g vs 510 g
  • 274.75 mm longer lens
    Lens length
    367 mm
    ▼ Worse than 98% of models
    Market range: <46 mm – >189 mm
    This camera lens is longer than the average camera lens (367 mm vs 92.25 mm). The average lens has a length of 92.25 mm.
    367 mm vs 92.25 mm
  • 86 mm wider lens barrel
    Lens diameter
    163 mm
    ▼ Worse than 99% of models
    Market range: <62.4 mm – >94.7 mm
    This camera lens is wider than the average camera lens (163 mm vs 77 mm). The average lens has a diameter of 77 mm.
    163 mm vs 77 mm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

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Third-party reviews

What we like about Canon RF 400mm F 2 8L IS USM

  • Exceptional image quality with razor-sharp results even at wide f/2.8 aperture
  • Lightning-fast and accurate autofocus, ideal for high-speed action like motorsports and birds in flight
  • Significant weight reduction (approx. 2.89kg / 6.4lbs) compared to predecessors, improving portability and reducing fatigue
  • Excellent 5.5-stop Image Stabilization that integrates effectively with EOS R-series In-Body Image Stabilization
  • Full compatibility with RF 1.4x and 2x teleconverters with minimal impact on image quality or focus speed
  • Robust L-series build quality with extensive weather sealing and heat-reflecting white finish

What we don't like about Canon RF 400mm F 2 8L IS USM

  • Extremely high price point (approx. $12,000–$13,000), making it a significant investment
  • Fixed 400mm focal length lacks the versatility of a zoom lens for changing subject distances
  • Lacks the dedicated customizable control ring found on most other Canon RF lenses
  • Optical design is virtually identical to the EF 400mm f/2.8L IS III, offering little upgrade for owners of that specific model
  • Size and large front element make it cumbersome for general 'walk-around' photography or travel

Verdict

The Canon RF 400mm f/2.8L IS USM is a professional-grade super-telephoto prime lens featuring a fast f/2.8 maximum aperture, a 9-blade circular diaphragm for smooth bokeh, and a 2.5m minimum focusing distance. Its advanced optical construction includes 17 elements in 13 groups with two fluorite and one Super UD element to minimize aberrations, alongside Air Sphere and Super Spectra coatings to reduce flare and ghosting. Key pros include lightning-fast Dual Power Focus Drive autofocus, up to 5.5 stops of optical image stabilisation, and a rugged, weather-sealed L-series build that is significantly lighter than its predecessors at 2.89kg. However, the primary cons are its extremely high price point, large physical footprint that may require specialized transport, and the lack of a built-in customizable control ring found on other RF lenses.

Compare Canon RF 400mm F 2 8L IS USM with other products in the Camera lenses category

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