Canon
EOS M6 Mark II
Fast APS-C EF-M body with 32.5MP and 14fps — popular on the used market.
$849
Released Aug 2019
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 6.2 years newer.
Wins
EOS M6 Mark II
Wins
EOS R6 Mark III
7 categories tied
Check current prices
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TL;DR — Key differences
- 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 143)
- BEOS R6 Mark III has higher 4K max frame rate (120 fps vs 30 fps)
- BEOS R6 Mark III has higher ISO max (native) (64,000 vs 25,600)
- BEOS R6 Mark III has higher RAW buffer depth (150 frames vs 60 frames)
Key specs at a glance
Size and weight, to scale
EOS M6 Mark II
138 × 98 × 88 mm
408 g (0.90 lb / 14.39 oz)
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
EOS M6 Mark II and EOS R6 Mark III share virtually identical body dimensions.
EOS M6 Mark II is 291 g lighter than EOS R6 Mark III.
Depth (front-to-back): 88mm EOS M6 Mark II · 88mm EOS R6 Mark III
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS M6 Mark II
138 × 98 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 M6 Mark II
138 × 88 mm
EOS R6 Mark III
138 × 88 mm
Sensor size, to scale
EOS M6 Mark II
22.3 × 14.9 mm · APS-C
332 mm² area
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
2.6× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS M6 Mark II: mount data unavailable
EOS R6 Mark III
✓ 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 M6 Mark II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Weight
408 g vs 699 g — lower is better
Burst (mechanical)
14 fps vs 12 fps — higher is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Reasons to choose
EOS R6 Mark III
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
AF points / zones
1053 vs 143 — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S…
4K max frame rate
120 fps vs 30 fps — higher is better
ISO max (native)
64,000 vs 25,600 — higher is better
RAW buffer depth
150 frames vs 60 frames — higher is better
Both cameras share
- ✓Resolution — Both 32.5 MP
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓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 M6 Mark II
Pros
- ✓32.5MP APS-C
- ✓14fps
- ✓Compact
Cons
- –EF-M mount dead-end
- –No IBIS
- –No EVF built-in
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 portraits, EOS M6 Mark II or EOS R6 Mark III?
EOS R6 Mark III scores 8.0/10 versus 5.5/10 for EOS M6 Mark II — 32.5MP — ample resolution for portraits.
What's the resolution difference between the EOS M6 Mark II and EOS R6 Mark III?
Both cameras share the same 32.5 MP resolution.
Do the EOS M6 Mark II and EOS R6 Mark III have in-body image stabilization?
EOS M6 Mark II has 6-stop in-body image stabilization, while eOS R6 Mark III has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS M6 Mark II or the EOS R6 Mark III?
EOS M6 Mark II reaches 30 fps electronic. EOS R6 Mark III reaches 40 fps electronic.
What's the weight difference between the EOS M6 Mark II and EOS R6 Mark III?
EOS M6 Mark II weighs 408 g and EOS R6 Mark III weighs 699 g, so the EOS M6 Mark II is 291 g lighter.
Do the EOS M6 Mark II and EOS R6 Mark III record 4K video?
EOS M6 Mark II: 4K up to 30p. EOS R6 Mark III: 4K up to 120p.
Are the EOS M6 Mark II and EOS R6 Mark III weather sealed?
EOS M6 Mark II: Yes. EOS R6 Mark III: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS M6 Mark II and 640 shots for the EOS R6 Mark III, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS M6 Mark II launched at $849 and EOS R6 Mark III at $2,799. The EOS M6 Mark II is $1,950 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.