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
Original 20MP hybrid that proved Canon mirrorless could match Sony for AF and IBIS.
$2,499
Released Jul 2020
EOS R3 is 1.2 years newer.
Wins
EOS R3
Wins
EOS R6
8 categories tied
Check current prices
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TL;DR — Key differences
- AEOS R3 has higher Max video bit rate (2600 Mbps vs 150 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)
- AEOS R3 has higher Burst (electronic) (30 fps vs 20 fps)
- BEOS R6 has lower Weight (720 g vs 1015 g)
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
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
EOS R3 is 1mm thinner than EOS R6 but it is also 12mm wider and 45mm taller.
EOS R3 is 295 g heavier than EOS R6.
Depth (front-to-back): 87mm EOS R3 · 88mm EOS R6
Sensor size, to scale
EOS R3
36 × 24 mm · Full Frame
864 mm² area
EOS R6
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
✓ 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
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
4K max frame rate
120 fps vs 60 fps — higher is better
Internal RAW video
Only EOS R3 supports it
Card types
Adds CFexpress Type B
EVF resolution
5,760,000 vs 3,690,000 — higher is better
Reasons to choose
EOS R6
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Pre-Capture / Pre-Release
Only EOS R6 supports it
Weight
720 g vs 1015 g — lower is better
Battery life (CIPA)
640 shots vs 620 shots — higher is better
EVF magnification
0.78 × vs 0.76 × — 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
Pros
- ✓20MP low-light king
- ✓8-stop IBIS
- ✓4K 60p
- ✓Proven AF
Cons
- –Superseded by R6 II
- –20MP resolution
- –No 40fps
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R3 or EOS R6?
EOS R6 scores 10.0/10 versus 5.0/10 for EOS R3 — 20fps burst captures fleeting moments.
What's the resolution difference between the EOS R3 and EOS R6?
EOS R3 is 24.1 MP and EOS R6 is 20.1 MP, so the EOS R3 captures more detail for cropping and large prints.
Do the EOS R3 and EOS R6 have in-body image stabilization?
EOS R3 has 8-stop in-body image stabilization, while eOS R6 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS R3 or the EOS R6?
EOS R3 reaches 30 fps electronic. EOS R6 reaches 20 fps electronic.
What's the weight difference between the EOS R3 and EOS R6?
EOS R3 weighs 1015 g and EOS R6 weighs 720 g, so the EOS R6 is 295 g lighter.
Do the EOS R3 and EOS R6 record 4K video?
EOS R3: 6K RAW (max), 4K up to 120p. EOS R6: 4K up to 60p.
Are the EOS R3 and EOS R6 weather sealed?
EOS R3: Yes. EOS R6: Yes.
Which has better battery life?
Rated battery life is 620 shots (CIPA) for the EOS R3 and 640 shots for the EOS R6, giving the EOS R6 the edge.
How much does each cost?
EOS R3 launched at $5,999 and EOS R6 at $2,499. The EOS R6 is $3,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.