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
OM System
OM-3
Retro-styled MFT body with modern AF and creator-friendly design.
$1,699
Launch priceReleased Jan 2025
EOS R6 Mark III is 9 months newer.
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Wins
EOS R6 Mark III
Wins
OM-3
4 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 205 Mbps)
- AEOS R6 Mark III has higher 1080p max frame rate (180 fps vs 59.94 fps)
- BOM-3 has higher Burst (electronic) (120 fps vs 40 fps)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 25,600)
- AEOS R6 Mark III has higher 4K max frame rate (120 fps vs 59.94 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
Credit card
85.6 × 54 mm
for scale
OM-3
139 × 89 × 46 mm
413 g (0.91 lb / 14.57 oz)
EOS R6 Mark III is 1mm narrower than OM-3 but it is also 10mm taller and 43mm thicker.
EOS R6 Mark III is 286 g heavier than OM-3.
Depth (front-to-back): 88mm EOS R6 Mark III · 46mm OM-3
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Credit card
85.6 × 54 mm
OM-3
139 × 89 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R6 Mark III
138 × 88 mm
Credit card
85.6 × 54 mm
OM-3
139 × 46 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
OM-3
17.4 × 13 mm · Compact / large-type
226 mm² area
3.8× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R6 Mark III
Canon RF
105+
native lenses available
OM-3
✓ more lensesMicro Four Thirds
130+
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 R6 Mark III
AF low-light limit
-6.5 EV vs -5.5 EV — lower is better
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 205 Mbps — higher is better
1080p max frame rate
180 fps vs 59.94 fps — higher is better
Subject recognition
Adds Dogs, Cats, Horses…
ISO max (native)
64,000 vs 25,600 — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
Reasons to choose
OM-3
Dimensions (W×H×D mm)
Adds 139.3, 88.9, 45.8
Card types
Adds SD, SDHC, SDXC
Burst (electronic)
120 fps vs 40 fps — higher is better
Subject recognition
Adds Animals, Motorsports, Airplanes
Codecs
Adds MOV, MPEG-4 AVC
Weight
413 g vs 699 g — lower is better
EVF magnification
1.23 × vs 0.76 × — higher is better
Both cameras share
- ✓AF points / zones — Both 1053
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
OM-3
Pros
- ✓Retro design
- ✓Modern AF
- ✓Compact
Cons
- –MFT sensor
- –Premium for MFT
- –Smaller lens selection
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and OM-3 at major authorized retailers.
Canon EOS R6 Mark III
OM System OM-3
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, EOS R6 Mark III or OM-3?
EOS R6 Mark III scores 7.5/10 versus 2.5/10 for OM-3 — 32.5MP — ample resolution.
What's the resolution difference between the EOS R6 Mark III and OM-3?
EOS R6 Mark III is 32.5 MP and OM-3 is 20.4 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and OM-3 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while OM-3 has 6.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the OM-3?
EOS R6 Mark III reaches 40 fps electronic. OM-3 reaches 120 fps electronic.
What's the weight difference between the EOS R6 Mark III and OM-3?
EOS R6 Mark III weighs 699 g and OM-3 weighs 413 g, so the OM-3 is 286 g lighter.
Do the EOS R6 Mark III and OM-3 record 4K video?
EOS R6 Mark III: 4K up to 120p. OM-3: 4K up to 59.94p.
Are the EOS R6 Mark III and OM-3 weather sealed?
EOS R6 Mark III: Yes. OM-3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 640 shots for the OM-3, giving the OM-3 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and OM-3 at $1,699. The OM-3 is $1,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark III vs OM-3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Canon and OM System press materials.