OM System
OM-1 II
Flagship MFT with stacked sensor, 120fps, and pro wildlife features.
$2,399
Launch priceReleased Feb 2024
Xtra
Atto
Ultra-compact 54g wearable action camera with 1/1.3-inch sensor, 4K/60fps, 143° FOV, 128GB internal storage, and 220-min battery with Vision Dock.
$299
Launch priceReleased Jan 2026
Atto is 2 years newer.
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Wins
OM-1 II
Wins
Atto
1 categories tied
Which would you choose?
TL;DR — Key differences
- AOM-1 II has higher AF points / zones (1053 vs 0)
- AOM-1 II has higher Card slots (1 vs 0)
- AOM-1 II has higher ISO max (native) (102,400 vs 6,400)
- BAtto has lower Weight (54 g vs 599 g)
- AOM-1 II has higher IBIS effectiveness (8.5 stops vs 6 stops)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareOM-1 II
135 × 92 × 73 mm
599 g (1.32 lb / 21.13 oz)
Credit card
85.6 × 54 mm
for scale
OM-1 II is 545 g heavier than Atto.
Depth (front-to-back): 73mm OM-1 II
Sensor size, to scale
OM-1 II
17.4 × 13 mm · Compact / large-type
226 mm² area
Atto
9.6 × 7.2 mm · Compact
69 mm² area
3.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
OM-1 II
✓ more lensesMicro Four Thirds
130+
native lenses available
Atto: mount data unavailable
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 II
AF points / zones
1053 vs 0 — higher is better
Subject recognition
Adds People, Birds, Animals…
Dimensions (W×H×D mm)
Adds 134.8, 91.6, 72.7
Card slots
1 vs 0 — higher is better
Card types
Adds SD UHS-II, SD UHS-I
ISO max (native)
102,400 vs 6,400 — higher is better
Eye AF
Only OM-1 II supports it
Animal / bird AF
Only OM-1 II supports it
Reasons to choose
Atto
Stabilization modes
Adds MotionMaster, TiltGuard
Card types
Adds microSD (via Vision Dock)
Weight
54 g vs 599 g — lower is better
Battery life (CIPA)
640 shots vs 520 shots — higher is better
Both cameras share
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 60 fps
- ✓Weather sealing — Both support weather sealing
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
OM-1 II
Pros
- ✓120fps stills
- ✓Stacked MFT
- ✓IP53 weather sealing
- ✓Computational features
Cons
- –MFT sensor size
- –Smaller ecosystem
- –Menu complexity
Atto
Pros
- ✓54g lightest in class
- ✓220 min with Vision Dock
- ✓128GB built-in + 600MB/s transfer
- ✓5-min pre-recording
Cons
- –No built-in screen
- –4K/60fps 16:9 only
- –10m waterproof (no case)
Decided which one is right for you?
Compare live prices for the OM-1 II and Atto at major authorized retailers.
OM System OM-1 II
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, OM-1 II or Atto?
OM-1 II scores 10.0/10 versus 5.0/10 for Atto — 120fps burst — pro-level action capture.
Do the OM-1 II and Atto have in-body image stabilization?
OM-1 II has 8.5-stop in-body image stabilization, while Atto uses Electronic stabilization (MotionMaster + TiltGuard) (electronic).
What's the weight difference between the OM-1 II and Atto?
OM-1 II weighs 599 g and Atto weighs 54 g, so the Atto is 545 g lighter.
Do the OM-1 II and Atto record 4K video?
OM-1 II: 4K up to 60p. Atto: 4K up to 60p.
Are the OM-1 II and Atto weather sealed?
OM-1 II: Yes. Atto: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the OM-1 II and 640 shots for the Atto, giving the Atto the edge.
How much does each cost?
OM-1 II launched at $2,399 and Atto at $299. The Atto is $2,100 less.
Can't decide between two? Compare a third camera.
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Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.