Canon
EOS M6 Mark II
Fast APS-C EF-M body with 32.5MP and 14fps — popular on the used market.
$849
Launch priceReleased Aug 2019
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 R3 is 2.1 years newer.
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Wins
EOS M6 Mark II
Wins
EOS R3
5 categories tied
Which would you choose?
TL;DR — Key differences
- BEOS R3 has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- BEOS R3 has higher AF points / zones (1053 vs 143)
- BEOS R3 has higher ISO max (native) (102,400 vs 25,600)
- BEOS R3 has higher 4K max frame rate (120 fps vs 30 fps)
- BEOS R3 has higher RAW buffer depth (150 frames vs 60 frames)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS M6 Mark II
138 × 98 × 88 mm
408 g (0.90 lb / 14.39 oz)
Credit card
85.6 × 54 mm
for scale
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS M6 Mark II is 12mm narrower and 45mm shorter than EOS R3 but it is also 1mm thicker.
EOS M6 Mark II is 607 g lighter than EOS R3.
Depth (front-to-back): 88mm EOS M6 Mark II · 87mm EOS R3
Sensor size, to scale
EOS M6 Mark II
22.3 × 14.9 mm · APS-C
332 mm² area
EOS R3
36 × 24 mm · Full Frame
864 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 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 M6 Mark II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Weight
408 g vs 1015 g — lower is better
Pre-Capture / Pre-Release
Only EOS M6 Mark II supports it
Resolution
32.5 MP vs 24.1 MP — higher is better
Burst (mechanical)
14 fps vs 12 fps — higher is better
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…
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
AF points / zones
1053 vs 143 — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
4K max frame rate
120 fps vs 30 fps — higher is better
Codecs
Adds RAW, H.265
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Burst (electronic) — Both 30 fps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
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 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 M6 Mark II and EOS R3 at major authorized retailers.
Canon EOS M6 Mark II
Canon EOS R3
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, EOS M6 Mark II or EOS R3?
EOS R3 scores 9.0/10 versus 5.0/10 for EOS M6 Mark II — 6K video for oversampled 4K.
What's the resolution difference between the EOS M6 Mark II and EOS R3?
EOS M6 Mark II is 32.5 MP and EOS R3 is 24.1 MP, so the EOS M6 Mark II captures more detail for cropping and large prints.
Do the EOS M6 Mark II and EOS R3 have in-body image stabilization?
EOS M6 Mark II has 6-stop in-body image stabilization, while EOS R3 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS M6 Mark II or the EOS R3?
EOS M6 Mark II reaches 30 fps electronic. EOS R3 reaches 30 fps electronic.
What's the weight difference between the EOS M6 Mark II and EOS R3?
EOS M6 Mark II weighs 408 g and EOS R3 weighs 1015 g, so the EOS M6 Mark II is 607 g lighter.
Do the EOS M6 Mark II and EOS R3 record 4K video?
EOS M6 Mark II: 4K up to 30p. EOS R3: 6K RAW (max), 4K up to 120p.
Are the EOS M6 Mark II and EOS R3 weather sealed?
EOS M6 Mark II: Yes. EOS R3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS M6 Mark II and 620 shots for the EOS R3, giving the EOS M6 Mark II the edge.
How much does each cost?
EOS M6 Mark II launched at $849 and EOS R3 at $5,999. The EOS M6 Mark II is $5,150 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS M6 Mark II vs EOS R3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.