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 R6 Mark III
Hybrid 32.5MP full-frame RF body with 7K RAW video, 40fps electronic burst, 8.5-stop IBIS, and Dual Pixel CMOS AF II.
$2,799
Released Nov 2025
EOS R6 Mark III is 9.2 years newer.
Wins
EOS 5D Mark IV
Wins
EOS R6 Mark III
2 categories tied
Check current prices
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TL;DR — Key differences
- BEOS R6 Mark III has higher IBIS effectiveness (8.5 stops vs 0 stops)
- BEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- BEOS R6 Mark III has higher AF points / zones (1053 vs 61)
- BEOS R6 Mark III has higher Burst (electronic) (40 fps vs 7 fps)
- BEOS R6 Mark III 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 R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
EOS 5D Mark IV is 13mm thinner than EOS R6 Mark III but it is also 12mm wider and 18mm taller.
EOS 5D Mark IV is 191 g heavier than EOS R6 Mark III.
Depth (front-to-back): 76mm EOS 5D Mark IV · 88mm EOS R6 Mark III
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS 5D Mark IV
151 × 116 mm
EOS R6 Mark III
138 × 98 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 R6 Mark III
138 × 88 mm
Sensor size, to scale
EOS 5D Mark IV
36 × 24 mm · Full Frame
864 mm² area
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
EOS 5D Mark IV
✓ more lensesCanon EF
300+
native lenses available
EOS R6 Mark III
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
Codecs
Adds Motion JPEG
Battery life (CIPA)
900 shots vs 640 shots — higher is better
Reasons to choose
EOS R6 Mark III
AF low-light limit
-6.5 EV vs -3 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
IBIS effectiveness
8.5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
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)
40 fps vs 7 fps — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓Weather sealing — Both support weather sealing
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
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 R6 Mark III
Pros
- ✓32.5MP full-frame sensor
- ✓7K RAW video & 4K 120p
- ✓40fps electronic burst with Pre-Continuous
- ✓8.5-stop IBIS
Cons
- –Single CFexpress Type B + SD slot
- –Smaller LCD than R5 II
- –LP-E6P required for full features
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS 5D Mark IV or EOS R6 Mark III?
EOS R6 Mark III scores 8.5/10 versus 3.0/10 for EOS 5D Mark IV — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS 5D Mark IV and EOS R6 Mark III?
EOS 5D Mark IV is 30.4 MP and EOS R6 Mark III is 32.5 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS 5D Mark IV and EOS R6 Mark III have in-body image stabilization?
EOS 5D Mark IV does not have IBIS, while eOS R6 Mark III has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS 5D Mark IV or the EOS R6 Mark III?
EOS 5D Mark IV reaches 7 fps electronic. EOS R6 Mark III reaches 40 fps electronic.
What's the weight difference between the EOS 5D Mark IV and EOS R6 Mark III?
EOS 5D Mark IV weighs 890 g and EOS R6 Mark III weighs 699 g, so the EOS R6 Mark III is 191 g lighter.
Do the EOS 5D Mark IV and EOS R6 Mark III record 4K video?
EOS 5D Mark IV: 4K up to 30p. EOS R6 Mark III: 4K up to 120p.
Are the EOS 5D Mark IV and EOS R6 Mark III weather sealed?
EOS 5D Mark IV: Yes. EOS R6 Mark III: Yes.
Which has better battery life?
Rated battery life is 900 shots (CIPA) for the EOS 5D Mark IV and 640 shots for the EOS R6 Mark III, giving the EOS 5D Mark IV the edge.
How much does each cost?
EOS 5D Mark IV launched at $3,499 and EOS R6 Mark III at $2,799. The EOS R6 Mark III is $700 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.