OM System
OM-1
First OM System flagship with cross-type AF and 50fps burst.
$2,199
Released Feb 2022
OM System
OM-D E-M10 Mark IV
Entry MFT body with IBIS and approachable controls.
$699
Released Aug 2020
OM-1 is 1.5 years newer.
Wins
OM-1
Wins
OM-D E-M10 Mark IV
4 categories tied
TL;DR — Key differences
- AOM-1 has higher AF points / zones (1053 vs 121)
- AOM-1 has higher Burst (electronic) (120 fps vs 15 fps)
- AOM-1 has higher ISO max (native) (102,400 vs 25,600)
- AOM-1 has lower ISO min (native) (80 vs 200)
- AOM-1 has higher EVF resolution (5,760,000 vs 2,360,000)
Key specs at a glance
Size and weight, to scale
OM-1
135 × 92 × 73 mm
599 g (1.32 lb / 21.13 oz)
OM-D E-M10 Mark IV
122 × 85 × 49 mm
383 g (0.84 lb / 13.51 oz)
OM-1 is 13mm wider, 7mm taller, and 24mm thicker than OM-D E-M10 Mark IV.
OM-1 is 216 g heavier than OM-D E-M10 Mark IV.
Depth (front-to-back): 73mm OM-1 · 49mm OM-D E-M10 Mark IV
Sensor size, to scale
OM-1
17.4 × 13 mm · Compact / large-type
226 mm² area
OM-D E-M10 Mark IV
17.4 × 13 mm · Compact / large-type
226 mm² area
Lens ecosystem
Native lens selection
OM-1
✓ more lensesMicro Four Thirds
130+
native lenses available
OM-D E-M10 Mark IV
✓ 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
OM-1
Subject recognition
Adds People, Birds, Animals…
Dimensions (W×H×D mm)
Adds 134.8, 91.6, 72.7
AF points / zones
1053 vs 121 — higher is better
Burst (electronic)
120 fps vs 15 fps — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
ISO min (native)
80 vs 200 — lower is better
EVF resolution
5,760,000 vs 2,360,000 — higher is better
Animal / bird AF
Only OM-1 supports it
Reasons to choose
OM-D E-M10 Mark IV
Subject recognition
Adds Face, Eye
Dimensions (W×H×D mm)
Adds 121.7, 84.6, 49
Weight
383 g vs 599 g — lower is better
Battery life (CIPA)
640 shots vs 520 shots — higher is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Max video bit rate — Both 150 Mbps
- ✓In-body stabilization — Both support in-body stabilization
- ✓Card slots — Both 1
- ✓EVF magnification — Both 0.78 ×
- ✓EVF refresh rate — Both 120 Hz
Pros & cons at a glance
Editorially curated highlights and trade-offs.
OM-1
Pros
- ✓50fps burst
- ✓Great weather sealing
- ✓Computational modes
Cons
- –MFT sensor
- –Superseded by OM-1 II
- –Smaller than FF
OM-D E-M10 Mark IV
Pros
- ✓IBIS at entry price
- ✓Compact
- ✓Easy to use
Cons
- –Older sensor
- –No weather sealing
- –MFT limits
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, OM-1 or OM-D E-M10 Mark IV?
OM-1 scores 8.5/10 versus 2.5/10 for OM-D E-M10 Mark IV — 120fps burst — pro-level action capture.
What's the resolution difference between the OM-1 and OM-D E-M10 Mark IV?
OM-1 is 20.4 MP and OM-D E-M10 Mark IV is 20.3 MP, so the OM-1 captures more detail for cropping and large prints.
Do the OM-1 and OM-D E-M10 Mark IV have in-body image stabilization?
OM-1 has 8-stop in-body image stabilization, while oM-D E-M10 Mark IV has 4.5-stop in-body image stabilization.
Which shoots faster bursts — the OM-1 or the OM-D E-M10 Mark IV?
OM-1 reaches 120 fps electronic. OM-D E-M10 Mark IV reaches 15 fps electronic.
What's the weight difference between the OM-1 and OM-D E-M10 Mark IV?
OM-1 weighs 599 g and OM-D E-M10 Mark IV weighs 383 g, so the OM-D E-M10 Mark IV is 216 g lighter.
Do the OM-1 and OM-D E-M10 Mark IV record 4K video?
OM-1: 4K up to 60p. OM-D E-M10 Mark IV: 4K up to 30p.
Are the OM-1 and OM-D E-M10 Mark IV weather sealed?
OM-1: Yes. OM-D E-M10 Mark IV: No.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the OM-1 and 640 shots for the OM-D E-M10 Mark IV, giving the OM-D E-M10 Mark IV the edge.
How much does each cost?
OM-1 launched at $2,199 and OM-D E-M10 Mark IV at $699. The OM-D E-M10 Mark IV is $1,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.