Canon
EOS-1D X Mark III
Canon flagship DSLR for sports and news with 20fps and legendary reliability.
$6,499
Released Feb 2020
Canon
EOS R6 Mark II
Versatile 24.2MP full-frame hybrid with class-leading AF and 4K 60p video.
$2,499
Released Nov 2022
EOS R6 Mark II is 2.8 years newer.
Wins
EOS-1D X Mark III
Wins
EOS R6 Mark II
7 categories tied
TL;DR — Key differences
- BEOS R6 Mark II has higher AF points / zones (1053 vs 191)
- BEOS R6 Mark II has higher Max video bit rate (340 Mbps vs 150 Mbps)
- BEOS R6 Mark II has higher Burst (electronic) (40 fps vs 20 fps)
- AEOS-1D X Mark III has higher EVF resolution (5,760,000 vs 3,690,000)
- BEOS R6 Mark II has higher Battery life (CIPA) (760 shots vs 520 shots)
Key specs at a glance
Size and weight, to scale
EOS-1D X Mark III
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
EOS R6 Mark II
138 × 98 × 88 mm
680 g (1.50 lb / 23.99 oz)
EOS-1D X Mark III and EOS R6 Mark II share virtually identical body dimensions.
EOS-1D X Mark III is 40 g heavier than EOS R6 Mark II.
Depth (front-to-back): 88mm EOS-1D X Mark III · 88mm EOS R6 Mark II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS-1D X Mark III
138 × 98 mm
EOS R6 Mark II
138 × 98 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS-1D X Mark III
138 × 88 mm
EOS R6 Mark II
138 × 88 mm
Sensor size, to scale
EOS-1D X Mark III
36 × 24 mm · Full Frame
864 mm² area
EOS R6 Mark II
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
EOS-1D X Mark III
✓ more lensesCanon EF
300+
native lenses available
EOS R6 Mark II
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-1D X Mark III
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Card types
Adds CFexpress Type B
EVF resolution
5,760,000 vs 3,690,000 — higher is better
Codecs
Adds RAW
Burst (mechanical)
16 fps vs 12 fps — higher is better
RAW buffer depth
200 frames vs 180 frames — higher is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Reasons to choose
EOS R6 Mark II
AF low-light limit
-6.5 EV vs -4 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
AF points / zones
1053 vs 191 — higher is better
Max video bit rate
340 Mbps vs 150 Mbps — higher is better
Animal / bird AF
Only EOS R6 Mark II supports it
Burst (electronic)
40 fps vs 20 fps — higher is better
Battery life (CIPA)
760 shots vs 520 shots — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓ISO max (native) — Both 102,400
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS-1D X Mark III
Pros
- ✓20fps DSLR
- ✓Pro build
- ✓Dual CFexpress
- ✓Excellent AF
Cons
- –DSLR platform
- –20MP
- –Very heavy
EOS R6 Mark II
Pros
- ✓Up to 40fps electronic burst
- ✓4K 60p oversampled from 6K
- ✓Dual Pixel CMOS AF II — superb subject tracking
- ✓8-stop IBIS
- ✓Fully articulating touchscreen
Cons
- –24.2MP may feel limiting for large prints
- –No CFexpress on base body
- –Short battery life vs. A7 IV
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS-1D X Mark III or EOS R6 Mark II?
EOS-1D X Mark III scores 10.0/10 versus 6.5/10 for EOS R6 Mark II — 20fps burst captures fleeting moments.
What's the resolution difference between the EOS-1D X Mark III and EOS R6 Mark II?
EOS-1D X Mark III is 20.1 MP and EOS R6 Mark II is 24.2 MP, so the EOS R6 Mark II captures more detail for cropping and large prints.
Do the EOS-1D X Mark III and EOS R6 Mark II have in-body image stabilization?
EOS-1D X Mark III has 8-stop in-body image stabilization, while eOS R6 Mark II has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS-1D X Mark III or the EOS R6 Mark II?
EOS-1D X Mark III reaches 20 fps electronic. EOS R6 Mark II reaches 40 fps electronic.
What's the weight difference between the EOS-1D X Mark III and EOS R6 Mark II?
EOS-1D X Mark III weighs 720 g and EOS R6 Mark II weighs 680 g, so the EOS R6 Mark II is 40 g lighter.
Do the EOS-1D X Mark III and EOS R6 Mark II record 4K video?
EOS-1D X Mark III: 4K up to 60p. EOS R6 Mark II: 4K up to 60p.
Are the EOS-1D X Mark III and EOS R6 Mark II weather sealed?
EOS-1D X Mark III: Yes. EOS R6 Mark II: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the EOS-1D X Mark III and 760 shots for the EOS R6 Mark II, giving the EOS R6 Mark II the edge.
How much does each cost?
EOS-1D X Mark III launched at $6,499 and EOS R6 Mark II at $2,499. The EOS R6 Mark II is $4,000 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.