OM System
OM-1
First OM System flagship with cross-type AF and 50fps burst.
$2,199
Launch priceReleased Feb 2022
OM System
OM-5 Mark II
Updated compact MFT travel body with 20MP sensor, 7.5-stop IBIS, IP53 sealing, and Live ND.
$1,299
Launch priceReleased Jan 2025
OM-5 Mark II is 2.9 years newer.
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Wins
OM-1
Wins
OM-5 Mark II
7 categories tied
Which would you choose?
TL;DR — Key differences
- 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 higher EVF resolution (5,760,000 vs 2,360,000)
- BOM-5 Mark II has higher Card slots (2 vs 1)
- AOM-1 has higher Burst (mechanical) (10 fps vs 6 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareOM-1
135 × 92 × 73 mm
599 g (1.32 lb / 21.13 oz)
Credit card
85.6 × 54 mm
for scale
OM-5 Mark II
125 × 85 × 50 mm
414 g (0.91 lb / 14.60 oz)
OM-1 is 10mm wider, 6mm taller, and 23mm thicker than OM-5 Mark II.
OM-1 is 185 g heavier than OM-5 Mark II.
Depth (front-to-back): 73mm OM-1 · 50mm OM-5 Mark II
Sensor size, to scale
OM-1
17.4 × 13 mm · Compact / large-type
226 mm² area
OM-5 Mark II
17.3 × 13 mm · Micro Four Thirds
225 mm² area
Lens ecosystem
Native lens selection
OM-1
✓ more lensesMicro Four Thirds
130+
native lenses available
OM-5 Mark II
✓ 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
AF low-light limit
-8 EV vs -7 EV — lower is better
Subject recognition
Adds People, Birds, Animals…
Dimensions (W×H×D mm)
Adds 134.8, 91.6, 72.7
Burst (electronic)
120 fps vs 15 fps — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
EVF resolution
5,760,000 vs 2,360,000 — higher is better
Card types
Adds SD UHS-I
Burst (mechanical)
10 fps vs 6 fps — higher is better
Reasons to choose
OM-5 Mark II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 125.3, 85.2, 49.7
Card slots
2 vs 1 — higher is better
Headphone jack (3.5mm)
Only OM-5 Mark II supports it
Weight
414 g vs 599 g — lower is better
Battery life (CIPA)
640 shots vs 520 shots — higher is better
Both cameras share
- ✓Resolution — Both 20.4 MP
- ✓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.
OM-1
Pros
- ✓50fps burst
- ✓Great weather sealing
- ✓Computational modes
Cons
- –MFT sensor
- –Superseded by OM-1 II
- –Smaller than FF
OM-5 Mark II
Pros
- ✓7.5-stop IBIS
- ✓IP53 weather sealing
- ✓Live ND & computational modes
- ✓Compact travel body
Cons
- –MFT sensor
- –Single card slot
- –Premium for MFT
Decided which one is right for you?
Compare live prices for the OM-1 and OM-5 Mark II at major authorized retailers.
OM System OM-1
OM System OM-5 Mark II
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, OM-1 or OM-5 Mark II?
OM-1 scores 10.0/10 versus 8.5/10 for OM-5 Mark II — 120fps burst — pro-level action capture.
What's the resolution difference between the OM-1 and OM-5 Mark II?
Both cameras share the same 20.4 MP resolution.
Do the OM-1 and OM-5 Mark II have in-body image stabilization?
OM-1 has 8-stop in-body image stabilization, while OM-5 Mark II has 7.5-stop in-body image stabilization.
Which shoots faster bursts — the OM-1 or the OM-5 Mark II?
OM-1 reaches 120 fps electronic. OM-5 Mark II reaches 15 fps electronic.
What's the weight difference between the OM-1 and OM-5 Mark II?
OM-1 weighs 599 g and OM-5 Mark II weighs 414 g, so the OM-5 Mark II is 185 g lighter.
Do the OM-1 and OM-5 Mark II record 4K video?
OM-1: 4K up to 60p. OM-5 Mark II: 4K up to 60p.
Are the OM-1 and OM-5 Mark II weather sealed?
OM-1: Yes. OM-5 Mark II: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the OM-1 and 640 shots for the OM-5 Mark II, giving the OM-5 Mark II the edge.
How much does each cost?
OM-1 launched at $2,199 and OM-5 Mark II at $1,299. The OM-5 Mark II is $900 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way OM-1 vs OM-5 Mark II vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.