Canon
EOS 5D Mark IV
Pro 30MP full-frame DSLR still used for weddings, events, and studio work.
$3,499
Released Aug 2016
Canon
EOS R3
Pro 24MP full-frame stacked-sensor body built for sports, news, wildlife, and high-speed hybrid capture.
$5,999
Released Sep 2021
EOS R3 is 5.1 years newer.
Wins
EOS 5D Mark IV
Wins
EOS R3
2 categories tied
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TL;DR — Key differences
- BEOS R3 has higher IBIS effectiveness (8 stops vs 0 stops)
- BEOS R3 has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- BEOS R3 has higher AF points / zones (1053 vs 61)
- BEOS R3 has higher Burst (electronic) (30 fps vs 7 fps)
- BEOS R3 has higher 4K max frame rate (120 fps vs 30 fps)
Key specs at a glance
Size and weight, to scale
EOS 5D Mark IV
151 × 116 × 76 mm
890 g (1.96 lb / 31.39 oz)
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS 5D Mark IV is 26mm shorter and 11mm thinner than EOS R3 but it is also 1mm wider.
EOS 5D Mark IV is 125 g lighter than EOS R3.
Depth (front-to-back): 76mm EOS 5D Mark IV · 87mm EOS R3
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS 5D Mark IV
151 × 116 mm
EOS R3
150 × 143 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS 5D Mark IV
151 × 76 mm
EOS R3
150 × 87 mm
Sensor size, to scale
EOS 5D Mark IV
36 × 24 mm · Full Frame
864 mm² area
EOS R3
36 × 24 mm · Full Frame
864 mm² area
Lens ecosystem
Native lens selection
EOS 5D Mark IV
✓ more lensesCanon EF
300+
native lenses available
EOS R3
Canon 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 5D Mark IV
Dimensions (W×H×D mm)
Adds 150.7, 116.4, 75.9
Card types
Adds CF, SD UHS-I
Pre-Capture / Pre-Release
Only EOS 5D Mark IV supports it
Codecs
Adds Motion JPEG
Battery life (CIPA)
900 shots vs 620 shots — higher is better
Resolution
30.4 MP vs 24.1 MP — higher is better
Weight
890 g vs 1015 g — lower is better
Reasons to choose
EOS R3
AF low-light limit
-7.5 EV vs -3 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
IBIS effectiveness
8 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Card types
Adds CFexpress Type B, SD UHS-II
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
AF points / zones
1053 vs 61 — higher is better
Burst (electronic)
30 fps vs 7 fps — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Weather sealing — Both support weather sealing
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS 5D Mark IV
Pros
- ✓30MP proven sensor
- ✓Dual Pixel AF in live view
- ✓Rugged pro build
- ✓Huge EF lens ecosystem
Cons
- –DSLR platform aging
- –4K video limited
- –Heavy
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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, EOS 5D Mark IV or EOS R3?
EOS R3 scores 9.0/10 versus 4.0/10 for EOS 5D Mark IV — 6K video for oversampled 4K.
What's the resolution difference between the EOS 5D Mark IV and EOS R3?
EOS 5D Mark IV is 30.4 MP and EOS R3 is 24.1 MP, so the EOS 5D Mark IV captures more detail for cropping and large prints.
Do the EOS 5D Mark IV and EOS R3 have in-body image stabilization?
EOS 5D Mark IV does not have IBIS, while eOS R3 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS 5D Mark IV or the EOS R3?
EOS 5D Mark IV reaches 7 fps electronic. EOS R3 reaches 30 fps electronic.
What's the weight difference between the EOS 5D Mark IV and EOS R3?
EOS 5D Mark IV weighs 890 g and EOS R3 weighs 1015 g, so the EOS 5D Mark IV is 125 g lighter.
Do the EOS 5D Mark IV and EOS R3 record 4K video?
EOS 5D Mark IV: 4K up to 30p. EOS R3: 6K RAW (max), 4K up to 120p.
Are the EOS 5D Mark IV and EOS R3 weather sealed?
EOS 5D Mark IV: Yes. EOS R3: Yes.
Which has better battery life?
Rated battery life is 900 shots (CIPA) for the EOS 5D Mark IV and 620 shots for the EOS R3, giving the EOS 5D Mark IV the edge.
How much does each cost?
EOS 5D Mark IV launched at $3,499 and EOS R3 at $5,999. The EOS 5D Mark IV is $2,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.