Canon
EOS R
Canon’s first full-frame RF mirrorless — launched the RF mount ecosystem.
$2,299
Launch priceReleased Sep 2018
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
Launch priceReleased Nov 2025
EOS R6 Mark III is 7.2 years newer.
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Wins
EOS R
Wins
EOS R6 Mark III
3 categories tied
Which would you choose?
TL;DR — Key differences
- BEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- AEOS R has higher AF points / zones (5655 vs 1053)
- BEOS R6 Mark III has higher Burst (electronic) (40 fps vs 8 fps)
- BEOS R6 Mark III has higher 4K max frame rate (120 fps vs 29.97 fps)
- BEOS R6 Mark III has higher RAW buffer depth (150 frames vs 47 frames)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R
136 × 98 × 84 mm
660 g (1.46 lb / 23.28 oz)
Credit card
85.6 × 54 mm
for scale
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
EOS R is 3mm narrower and 4mm thinner than EOS R6 Mark III.
EOS R is 39 g lighter than EOS R6 Mark III.
Depth (front-to-back): 84mm EOS R · 88mm EOS R6 Mark III
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R
136 × 98 mm
Credit card
85.6 × 54 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 R
136 × 84 mm
Credit card
85.6 × 54 mm
EOS R6 Mark III
138 × 88 mm
Sensor size, to scale
EOS R
36 × 24 mm · Full Frame
864 mm² area
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
EOS R
✓ more lensesCanon RF
105+
native lenses available
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 R
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 135.8, 98.3, 84.4
Card types
Adds SD, SDHC, SDXC
AF points / zones
5655 vs 1053 — higher is better
Codecs
Adds MP4
Weight
660 g vs 699 g — lower 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
Card types
Adds CFexpress Type B, SD UHS-II
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
Burst (electronic)
40 fps vs 8 fps — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S…
4K max frame rate
120 fps vs 29.97 fps — higher is better
RAW buffer depth
150 frames vs 47 frames — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Weather sealing — Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R
Pros
- ✓First Canon RF body
- ✓Dual Pixel AF
- ✓Fully articulating screen
Cons
- –No IBIS
- –Single card slot
- –Superseded by R6/R8
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
Decided which one is right for you?
Compare live prices for the EOS R and EOS R6 Mark III at major authorized retailers.
Canon EOS R
Canon EOS R6 Mark III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R or EOS R6 Mark III?
EOS R6 Mark III scores 10.0/10 versus 6.0/10 for EOS R — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R and EOS R6 Mark III?
EOS R is 30.3 MP and EOS R6 Mark III is 32.5 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R and EOS R6 Mark III have in-body image stabilization?
EOS R 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 R or the EOS R6 Mark III?
EOS R reaches 8 fps electronic. EOS R6 Mark III reaches 40 fps electronic.
What's the weight difference between the EOS R and EOS R6 Mark III?
EOS R weighs 660 g and EOS R6 Mark III weighs 699 g, so the EOS R is 39 g lighter.
Do the EOS R and EOS R6 Mark III record 4K video?
EOS R: 4K up to 29.97p. EOS R6 Mark III: 4K up to 120p.
Are the EOS R and EOS R6 Mark III weather sealed?
EOS R: Yes. EOS R6 Mark III: Yes.
How much does each cost?
EOS R launched at $2,299 and EOS R6 Mark III at $2,799. The EOS R is $500 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R vs EOS R6 Mark III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Canon press materials.