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
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 1.2 years newer.
Wins
EOS R3
Wins
EOS R6 Mark II
9 categories tied
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TL;DR — Key differences
- AEOS R3 has higher Max video bit rate (2600 Mbps vs 340 Mbps)
- AEOS R3 has higher 4K max frame rate (120 fps vs 60 fps)
- AEOS R3 has higher EVF resolution (5,760,000 vs 3,690,000)
- BEOS R6 Mark II has lower Weight (680 g vs 1015 g)
- BEOS R6 Mark II has higher Burst (electronic) (40 fps vs 30 fps)
Key specs at a glance
Size and weight, to scale
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS R6 Mark II
138 × 98 × 88 mm
680 g (1.50 lb / 23.99 oz)
EOS R3 is 1mm thinner than EOS R6 Mark II but it is also 12mm wider and 44mm taller.
EOS R3 is 335 g heavier than EOS R6 Mark II.
Depth (front-to-back): 87mm EOS R3 · 88mm EOS R6 Mark II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R3
150 × 143 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 R3
150 × 87 mm
EOS R6 Mark II
138 × 88 mm
Sensor size, to scale
EOS R3
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 R3
✓ more lensesCanon RF
105+
native lenses available
EOS R6 Mark II
✓ 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 R3
AF low-light limit
-7.5 EV vs -6.5 EV — lower is better
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Max video bit rate
2600 Mbps vs 340 Mbps — higher is better
4K max frame rate
120 fps vs 60 fps — higher is better
Card types
Adds CFexpress Type B
EVF resolution
5,760,000 vs 3,690,000 — higher is better
Codecs
Adds RAW
Subject recognition
Adds Motorsport vehicles
Reasons to choose
EOS R6 Mark II
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
Subject recognition
Adds Horses, Cars, Motorbikes…
Pre-Capture / Pre-Release
Only EOS R6 Mark II supports it
Weight
680 g vs 1015 g — lower is better
Burst (electronic)
40 fps vs 30 fps — higher is better
Battery life (CIPA)
760 shots vs 620 shots — higher is better
RAW buffer depth
180 frames vs 150 frames — higher is better
Resolution
24.2 MP vs 24.1 MP — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓ISO max (native) — Both 102,400
- ✓AF points / zones — Both 1053
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
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 vlogging, EOS R3 or EOS R6 Mark II?
EOS R6 Mark II scores 8.0/10 versus 5.5/10 for EOS R3 — Fully articulating screen — see yourself while filming.
What's the resolution difference between the EOS R3 and EOS R6 Mark II?
EOS R3 is 24.1 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 R3 and EOS R6 Mark II have in-body image stabilization?
EOS R3 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 R3 or the EOS R6 Mark II?
EOS R3 reaches 30 fps electronic. EOS R6 Mark II reaches 40 fps electronic.
What's the weight difference between the EOS R3 and EOS R6 Mark II?
EOS R3 weighs 1015 g and EOS R6 Mark II weighs 680 g, so the EOS R6 Mark II is 335 g lighter.
Do the EOS R3 and EOS R6 Mark II record 4K video?
EOS R3: 6K RAW (max), 4K up to 120p. EOS R6 Mark II: 4K up to 60p.
Are the EOS R3 and EOS R6 Mark II weather sealed?
EOS R3: Yes. EOS R6 Mark II: Yes.
Which has better battery life?
Rated battery life is 620 shots (CIPA) for the EOS R3 and 760 shots for the EOS R6 Mark II, giving the EOS R6 Mark II the edge.
How much does each cost?
EOS R3 launched at $5,999 and EOS R6 Mark II at $2,499. The EOS R6 Mark II is $3,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.