Canon
EOS R1
Flagship 24.2MP full-frame BSI stacked RF body with 40fps burst, Dual Pixel Intelligent AF, 6K RAW, and 9.44M-dot EVF.
$6,299
Released Jul 2024
OM System
OM-3
Retro-styled MFT body with modern AF and creator-friendly design.
$1,699
Released Jan 2025
OM-3 is 6 months newer.
Wins
EOS R1
Wins
OM-3
3 categories tied
TL;DR — Key differences
- AEOS R1 has higher EVF resolution (9,440,000 vs 2,360,000)
- BOM-3 has higher Burst (electronic) (120 fps vs 40 fps)
- BOM-3 has lower Weight (496 g vs 1115 g)
- AEOS R1 has higher 4K max frame rate (120 fps vs 60 fps)
- AEOS R1 has higher Card slots (2 vs 1)
Key specs at a glance
Size and weight, to scale
EOS R1
158 × 150 × 87 mm
1115 g (2.46 lb / 39.33 oz)
OM-3
139 × 89 × 46 mm
496 g (1.09 lb / 17.50 oz)
EOS R1 is 18mm wider, 61mm taller, and 42mm thicker than OM-3.
EOS R1 is 619 g heavier than OM-3.
Depth (front-to-back): 87mm EOS R1 · 46mm OM-3
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
OM-3
139 × 89 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
OM-3
139 × 46 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 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 R1
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 R1
Dimensions (W×H×D mm)
Adds 157.6, 149.5, 87.3
Card types
Adds CFexpress Type B, CFexpress Type B
EVF resolution
9,440,000 vs 2,360,000 — higher is better
Subject recognition
Adds Dogs, Cats, Horses…
Codecs
Adds RAW, XF-HEVC S, XF-AVC S
AA filter
Only EOS R1 supports it
4K max frame rate
120 fps vs 60 fps — higher is better
Internal RAW video
Only EOS R1 supports it
Reasons to choose
OM-3
Dimensions (W×H×D mm)
Adds 139.3, 88.9, 45.8
Card types
Adds SD UHS-II, SD UHS-I
Burst (electronic)
120 fps vs 40 fps — higher is better
Weight
496 g vs 1115 g — lower is better
AF low-light limit
-8 EV vs -7.5 EV — lower is better
Subject recognition
Adds Animals, Motorsports, Airplanes
Codecs
Adds MOV
ISO min (native)
80 vs 100 — lower is better
Both cameras share
- ✓ISO max (native) — Both 102,400
- ✓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
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R1
Pros
- ✓40fps electronic burst
- ✓24.2MP BSI stacked full-frame sensor
- ✓Dual Pixel Intelligent AF
- ✓6K RAW and 4K 120p video
- ✓Dual CFexpress Type B slots
Cons
- –24MP resolution
- –Very expensive
- –Large integrated-grip body
OM-3
Pros
- ✓Retro design
- ✓Modern AF
- ✓Compact
Cons
- –MFT sensor
- –Premium for MFT
- –Smaller lens selection
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, EOS R1 or OM-3?
EOS R1 scores 7.0/10 versus 2.5/10 for OM-3 — Full-frame sensor — wider dynamic range.
What's the resolution difference between the EOS R1 and OM-3?
EOS R1 is 24.2 MP and OM-3 is 20.4 MP, so the EOS R1 captures more detail for cropping and large prints.
Do the EOS R1 and OM-3 have in-body image stabilization?
EOS R1 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 R1 or the OM-3?
EOS R1 reaches 40 fps electronic. OM-3 reaches 120 fps electronic.
What's the weight difference between the EOS R1 and OM-3?
EOS R1 weighs 1115 g and OM-3 weighs 496 g, so the OM-3 is 619 g lighter.
Do the EOS R1 and OM-3 record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. OM-3: 4K up to 60p.
Are the EOS R1 and OM-3 weather sealed?
EOS R1: Yes. OM-3: Yes.
How much does each cost?
EOS R1 launched at $6,299 and OM-3 at $1,699. The OM-3 is $4,600 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and OM System press materials.