Canon
EOS C400
RF-mount Super 35 cinema camera with 6K 60p, Cinema RAW Light, and built-in 9-stop ND.
$7,999
Launch priceReleased Sep 2024
Canon
EOS R3
Pro 24MP full-frame stacked-sensor body built for sports, news, wildlife, and high-speed hybrid capture.
$5,999
Launch priceReleased Sep 2021
EOS C400 is 3 years newer.
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Wins
EOS C400
Wins
EOS R3
6 categories tied
Which would you choose?
TL;DR — Key differences
- BEOS R3 has higher Max video bit rate (2600 Mbps vs 200 Mbps)
- BEOS R3 has higher ISO max (native) (102,400 vs 25,600)
- BEOS R3 has higher Resolution (24.1 MP vs 6.2 MP)
- BEOS R3 has higher EVF resolution (5,760,000 vs 3,690,000)
- BEOS R3 has higher Burst (mechanical) (12 fps vs 8 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS C400
162 × 138 × 130 mm
1450 g (3.20 lb / 51.15 oz)
Credit card
85.6 × 54 mm
for scale
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS C400 is 5mm shorter than EOS R3 but it is also 12mm wider and 43mm thicker.
EOS C400 is 435 g heavier than EOS R3.
Depth (front-to-back): 130mm EOS C400 · 87mm EOS R3
Sensor size, to scale
EOS C400
26.1 × 13.8 mm · APS-C
360 mm² area
EOS R3
36 × 24 mm · Full Frame
864 mm² area
2.4× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS C400
✓ more lensesCanon RF
105+
native lenses available
EOS R3
✓ more lensesCanon RF
105+
native lenses available
Counts include current first-party and major third-party native autofocus lenses.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose
EOS C400
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds Cinema RAW Light, XF-AVC, Apple ProRes
Dimensions (W×H×D mm)
Adds 162, 138, 130
Pre-Capture / Pre-Release
Only EOS C400 supports it
Battery life (CIPA)
640 shots vs 620 shots — higher is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Reasons to choose
EOS R3
AF low-light limit
-7.5 EV vs -6.5 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Codecs
Adds RAW, H.265, H.264
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Max video bit rate
2600 Mbps vs 200 Mbps — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
Resolution
24.1 MP vs 6.2 MP — higher is better
AA filter
Only EOS R3 supports it
Both cameras share
- ✓ISO min (native) — Both 100
- ✓AF points / zones — Both 1053
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 120 fps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS C400
Pros
- ✓6K 60p internal
- ✓Built-in 9-stop ND
- ✓Dual gain sensor
- ✓RF mount
Cons
- –Super 35 only
- –Premium price
- –Large media needs
EOS R3
Pros
- ✓30fps electronic burst from a stacked full-frame sensor
- ✓Exceptional low-light AF down to -7.5 EV
- ✓Integrated pro body with large LP-E19 battery
- ✓6K RAW video and 4K 120p
- ✓Rugged weather-sealed construction
Cons
- –24MP resolution trails higher-detail rivals
- –Large integrated-grip body
- –Expensive compared with enthusiast full-frame bodies
Decided which one is right for you?
Compare live prices for the EOS C400 and EOS R3 at major authorized retailers.
Canon EOS C400
Canon EOS R3
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS C400 or EOS R3?
EOS C400 scores 9.0/10 versus 5.0/10 for EOS R3 — 20fps burst captures fleeting moments.
What's the resolution difference between the EOS C400 and EOS R3?
EOS C400 is 6.2 MP and EOS R3 is 24.1 MP, so the EOS R3 captures more detail for cropping and large prints.
Do the EOS C400 and EOS R3 have in-body image stabilization?
EOS C400 has 7-stop in-body image stabilization, while EOS R3 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS C400 or the EOS R3?
EOS C400 reaches 20 fps electronic. EOS R3 reaches 30 fps electronic.
What's the weight difference between the EOS C400 and EOS R3?
EOS C400 weighs 1450 g and EOS R3 weighs 1015 g, so the EOS R3 is 435 g lighter.
Do the EOS C400 and EOS R3 record 4K video?
EOS C400: 6K 60p (max), 4K up to 120p. EOS R3: 6K RAW (max), 4K up to 120p.
Are the EOS C400 and EOS R3 weather sealed?
EOS C400: Yes. EOS R3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS C400 and 620 shots for the EOS R3, giving the EOS C400 the edge.
How much does each cost?
EOS C400 launched at $7,999 and EOS R3 at $5,999. The EOS R3 is $2,000 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS C400 vs EOS R3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.