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OM-3

OM System

OM-3

Retro-styled MFT body with modern AF and creator-friendly design.

$1,699

Launch price

Released Jan 2025

vs
Lumix G9 II

Panasonic

Lumix G9 II

MFT hybrid with 8-stop IBIS and 75fps stills for wildlife on a budget.

$1,899

Launch price

Released Sep 2023

OM-3 is 1.4 years newer.

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Wins

6categories

OM-3

Sports & ActionTravel

Wins

8categories

Lumix G9 II

Sports & ActionVideo & Hybrid

3 categories tied

Which would you choose?

TL;DR — Key differences

OM-3 wins 1 categories·Lumix G9 II wins 4 categories
  • BLumix G9 II has higher Max video bit rate (800 Mbps vs 205 Mbps)
  • BLumix G9 II has higher 4K max frame rate (120 fps vs 59.94 fps)
  • BLumix G9 II has lower ISO min (native) (100 vs 200)
  • BLumix G9 II has higher Card slots (2 vs 1)
  • AOM-3 has higher Battery life (CIPA) (640 shots vs 390 shots)

Key specs at a glance

OM-3Lumix G9 II
Resolution20.4 MP25.2 MP
SensorMFTMFT
ISO max25,60025,600
Burst120 fps75 fps
4K59.94 fps120 fps
IBIS6.5-stop8-stop
Weight413 g658 g
Battery640 shots390 shots

Size and weight, to scale

OM-3 front view

OM-3

139 × 89 × 46 mm

413 g (0.91 lb / 14.57 oz)

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

for scale

Lumix G9 II front view

Lumix G9 II

134 × 102 × 90 mm

658 g (1.45 lb / 23.21 oz)

OM-3 is 13mm shorter and 44mm thinner than Lumix G9 II but it is also 5mm wider.

OM-3 is 245 g lighter than Lumix G9 II.

Depth (front-to-back): 46mm OM-3 · 90mm Lumix G9 II

Back view, to scale

Width × Height — same proportions as the front of the body.

OM-3 back view

OM-3

139 × 89 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

Lumix G9 II back view

Lumix G9 II

134 × 102 mm

Top view, to scale

Width × Depth (front-to-back) — see which body is chunkier on the table.

OM-3 top view

OM-3

139 × 46 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

Lumix G9 II top view

Lumix G9 II

134 × 90 mm

Sensor size, to scale

OM-3

17.4 × 13 mm · Compact / large-type

226 mm² area

Lumix G9 II

17.3 × 13 mm · Micro Four Thirds

225 mm² area

Lens ecosystem

Native lens selection

OM-3

✓ more lenses

Micro Four Thirds

130+

native lenses available

60 first-party70 third-party

Lumix G9 II

✓ more lenses

Micro Four Thirds

130+

native lenses available

60 first-party70 third-party

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

Use caseOM-3Lumix G9 II
Portrait
4.0Fair
6.0Good✓ wins
Sports & Action
8.5Excellent
10.0Excellent✓ wins
Video & Hybrid
3.5Limited
9.5Excellent✓ wins
Landscape
2.5Limited
5.0Fair✓ wins
Travel
8.0Excellent✓ wins
6.5Good
Wildlife
5.5Fair
7.0Good✓ wins
Vlogging
6.5Good
8.0Excellent✓ wins

Why pick one over the other

Reasons to choose

OM-3

  • AF low-light limit

    -5.5 EV vs -4 EV — lower is better

  • Subject recognition

    Adds People, Birds, Animals…

  • Dimensions (W×H×D mm)

    Adds 139.3, 88.9, 45.8

  • Card types

    Adds SD, SDHC, SDXC

  • Codecs

    Adds MOV, MPEG-4 AVC

  • Battery life (CIPA)

    640 shots vs 390 shots — higher is better

  • Burst (electronic)

    120 fps vs 75 fps — higher is better

  • Weight

    413 g vs 658 g — lower is better

Reasons to choose

Lumix G9 II

  • Subject recognition

    Adds Human, Face, Eye…

  • Dimensions (W×H×D mm)

    Adds 134.3, 102.3, 90.1

  • Card types

    Adds SD UHS-II, SD UHS-II

  • Max video bit rate

    800 Mbps vs 205 Mbps — higher is better

  • 4K max frame rate

    120 fps vs 59.94 fps — higher is better

  • ISO min (native)

    100 vs 200 — lower is better

  • Internal RAW video

    Only Lumix G9 II supports it

  • Card slots

    2 vs 1 — higher is better

Both cameras share

  • ISO max (native)Both 25,600
  • AF frame coverageBoth 100 %
  • Eye AFBoth support eye af
  • Animal / bird AFBoth support animal / bird af
  • Pre-Capture / Pre-ReleaseBoth support pre-capture / pre-release
  • In-body stabilization (IBIS)Both support in-body stabilization (ibis)

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

Lumix G9 II

Pros

  • 75fps stills mode
  • 8-stop IBIS
  • Compact tele reach

Cons

  • MFT sensor
  • Smaller ecosystem
  • Video not GH-level

Decided which one is right for you?

Compare live prices for the OM-3 and Lumix G9 II at major authorized retailers.

Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.

Full specifications

= category winner

OM-3
Lumix G9 II
Resolution
20.4 MP
25.2 MP+24%
Sensor type
BSI Stacked MOS
Four Thirds Live MOS
Sensor size
17.4 x 13
17.3 x 13.0 mm
AA filter
No
No
OM-3
Lumix G9 II
Processor
TruePic X
Venus Engine
OM-3
Lumix G9 II
ISO min (native)
200
100−100 less
ISO max (native)
25,600
25,600
ISO max (expanded)
102,400
25,600
OM-3
Lumix G9 II
Shutter type
Mechanical Focal Plane Shutter and Electronic Rolling Shutter
Focal-plane mechanical + electronic shutter
Max mechanical speed
1/8000
1/8000 sec
Max electronic speed
1/32000
1/32000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for video, OM-3 or Lumix G9 II?

Lumix G9 II scores 9.5/10 versus 3.5/10 for OM-3 — 8K recording for future-proof footage.

What's the resolution difference between the OM-3 and Lumix G9 II?

OM-3 is 20.4 MP and Lumix G9 II is 25.2 MP, so the Lumix G9 II captures more detail for cropping and large prints.

Do the OM-3 and Lumix G9 II have in-body image stabilization?

OM-3 has 6.5-stop in-body image stabilization, while Lumix G9 II has 8-stop in-body image stabilization.

Which shoots faster bursts — the OM-3 or the Lumix G9 II?

OM-3 reaches 120 fps electronic. Lumix G9 II reaches 75 fps electronic.

What's the weight difference between the OM-3 and Lumix G9 II?

OM-3 weighs 413 g and Lumix G9 II weighs 658 g, so the OM-3 is 245 g lighter.

Do the OM-3 and Lumix G9 II record 4K video?

OM-3: 4K up to 59.94p. Lumix G9 II: 5.8K Open Gate (max), 4K up to 120p.

Are the OM-3 and Lumix G9 II weather sealed?

OM-3: Yes. Lumix G9 II: Yes.

Which has better battery life?

Rated battery life is 640 shots (CIPA) for the OM-3 and 390 shots for the Lumix G9 II, giving the OM-3 the edge.

How much does each cost?

OM-3 launched at $1,699 and Lumix G9 II at $1,899. The OM-3 is $200 less.

Can't decide between two? Compare a third camera.

Add any camera to get a three-way OM-3 vs Lumix G9 II vs X comparison.

Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed September 2026.

Product images courtesy of OM System and Panasonic press materials.