OM System
OM-3
Retro-styled MFT body with modern AF and creator-friendly design.
$1,699
Released Jan 2025
OM System
OM-5
Compact weather-sealed MFT for travel and outdoor photography.
$1,199
Released Nov 2022
OM-3 is 2.3 years newer.
Wins
OM-3
Wins
OM-5
13 categories tied
TL;DR — Key differences
- AOM-3 has higher AF points / zones (1053 vs 121)
- AOM-3 has higher Burst (electronic) (120 fps vs 30 fps)
- AOM-3 has higher 4K max frame rate (60 fps vs 30 fps)
- BOM-5 has lower Weight (414 g vs 496 g)
Key specs at a glance
Size and weight, to scale
OM-3
139 × 89 × 46 mm
496 g (1.09 lb / 17.50 oz)
OM-5
125 × 85 × 50 mm
414 g (0.91 lb / 14.60 oz)
OM-3 is 4mm thinner than OM-5 but it is also 14mm wider and 4mm taller.
OM-3 is 82 g heavier than OM-5.
Depth (front-to-back): 46mm OM-3 · 50mm OM-5
Sensor size, to scale
OM-3
17.4 × 13 mm · Compact / large-type
226 mm² area
OM-5
17.4 × 13 mm · Compact / large-type
226 mm² area
Lens ecosystem
Native lens selection
OM-3
✓ more lensesMicro Four Thirds
130+
native lenses available
OM-5
✓ 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-3
Dimensions (W×H×D mm)
Adds 139.3, 88.9, 45.8
AF points / zones
1053 vs 121 — higher is better
Burst (electronic)
120 fps vs 30 fps — higher is better
4K max frame rate
60 fps vs 30 fps — higher is better
Reasons to choose
OM-5
Dimensions (W×H×D mm)
Adds 125.3, 85.2, 49.7
Weight
414 g vs 496 g — lower is better
Both cameras share
- ✓Resolution — Both 20.4 MP
- ✓ISO min (native) — Both 80
- ✓ISO max (native) — Both 102,400
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
Pros & cons at a glance
Editorially curated highlights and trade-offs.
OM-3
Pros
- ✓Retro design
- ✓Modern AF
- ✓Compact
Cons
- –MFT sensor
- –Premium for MFT
- –Smaller lens selection
OM-5
Pros
- ✓Compact
- ✓IP53 sealing
- ✓Computational features
Cons
- –No grip extension
- –MFT sensor
- –Single slot
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, OM-3 or OM-5?
OM-3 scores 8.5/10 versus 6.5/10 for OM-5 — 120fps burst — pro-level action capture.
What's the resolution difference between the OM-3 and OM-5?
Both cameras share the same 20.4 MP resolution.
Do the OM-3 and OM-5 have in-body image stabilization?
OM-3 has 6.5-stop in-body image stabilization, while oM-5 has 6.5-stop in-body image stabilization.
Which shoots faster bursts — the OM-3 or the OM-5?
OM-3 reaches 120 fps electronic. OM-5 reaches 30 fps electronic.
What's the weight difference between the OM-3 and OM-5?
OM-3 weighs 496 g and OM-5 weighs 414 g, so the OM-5 is 82 g lighter.
Do the OM-3 and OM-5 record 4K video?
OM-3: 4K up to 60p. OM-5: 4K up to 30p.
Are the OM-3 and OM-5 weather sealed?
OM-3: Yes. OM-5: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the OM-3 and 640 shots for the OM-5, giving the OM-5 the edge.
How much does each cost?
OM-3 launched at $1,699 and OM-5 at $1,199. The OM-5 is $500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.