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Panasonic

Lumix G9

Original G9 stills flagship with 20MP MFT sensor, 60fps electronic burst, and excellent IBIS.

$1,699

Launch price

Released Nov 2017

vs
Alpha 1 II

Sony

Alpha 1 II

50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.

$6,499

Launch price

Released Nov 2024

Alpha 1 II is 7 years newer.

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Wins

4categories

Lumix G9

Sports & ActionVlogging

Wins

11categories

Alpha 1 II

Sports & ActionVideo & Hybrid

3 categories tied

Which would you choose?

TL;DR — Key differences

Lumix G9 wins 0 categories·Alpha 1 II wins 5 categories
  • BAlpha 1 II has higher AF points / zones (759 vs 225)
  • BAlpha 1 II has higher RAW buffer depth (200 frames vs 60 frames)
  • BAlpha 1 II has higher EVF resolution (9,437,184 vs 3,680,000)
  • BAlpha 1 II has higher Resolution (50.1 MP vs 20.3 MP)
  • BAlpha 1 II has lower ISO min (native) (100 vs 200)

Key specs at a glance

Lumix G9Alpha 1 II
Resolution20.3 MP50.1 MP
SensorMFTFull Frame
ISO max25,60032,000
Burst60 fps30 fps
4K60 fps120 fps
IBIS6.5-stop8.5-stop
Weight658 g743 g
Battery400 shots520 shots

Size and weight, to scale

Lumix G9

137 × 97 × 92 mm

658 g (1.45 lb / 23.21 oz)

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

Credit card

85.6 × 54 mm

for scale

Alpha 1 II front view

Alpha 1 II

136 × 97 × 83 mm

743 g (1.64 lb / 26.21 oz)

Lumix G9 is 1mm wider and 9mm thicker than Alpha 1 II.

Lumix G9 is 85 g lighter than Alpha 1 II.

Depth (front-to-back): 92mm Lumix G9 · 83mm Alpha 1 II

Sensor size, to scale

Lumix G9

17.3 × 13 mm · Micro Four Thirds

225 mm² area

Alpha 1 II

35.9 × 24 mm · Full Frame

862 mm² area

3.8× larger sensor area = shallower depth of field and better low-light performance.

Lens ecosystem

Native lens selection

Lumix G9

Micro Four Thirds

130+

native lenses available

60 first-party70 third-party

Alpha 1 II

✓ more lenses

Sony E

350+

native lenses available

80 first-party270 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 caseLumix G9Alpha 1 II
Portrait
5.0Fair
8.5Excellent✓ wins
Sports & Action
9.5Excellent
10.0Excellent✓ wins
Video & Hybrid
6.0Good
9.5Excellent✓ wins
Landscape
3.5Limited
9.0Excellent✓ wins
Travel
6.0Good
6.0Good
Wildlife
7.0Good
9.5Excellent✓ wins
Vlogging
7.5Good✓ wins
5.5Fair

Why pick one over the other

Reasons to choose

Lumix G9

  • Dimensions (W×H×D mm)

    Adds 136.9, 97.3, 91.6

  • Codecs

    Adds MP4, AVCHD

  • Subject recognition

    Adds Face, Eye

  • Burst (electronic)

    60 fps vs 30 fps — higher is better

  • Burst (mechanical)

    12 fps vs 10 fps — higher is better

  • Weight

    658 g vs 743 g — lower is better

  • AF frame coverage

    100 % vs 94 % — higher is better

Reasons to choose

Alpha 1 II

  • Dimensions (W×H×D mm)

    Adds 136.1, 96.9, 82.9

  • Codecs

    Adds XAVC HS, XAVC S, XAVC S-I…

  • AF points / zones

    759 vs 225 — higher is better

  • RAW buffer depth

    200 frames vs 60 frames — higher is better

  • Subject recognition

    Adds Bird, Insect, Car/Train…

  • EVF resolution

    9,437,184 vs 3,680,000 — higher is better

  • Resolution

    50.1 MP vs 20.3 MP — higher is better

  • AA filter

    Only Alpha 1 II supports it

Both cameras share

  • Eye AFBoth support eye af
  • Animal / bird AFBoth support animal / bird af
  • Pre-Capture / Pre-ReleaseBoth support pre-capture / pre-release
  • Max video bit rateBoth 150 Mbps
  • In-body stabilization (IBIS)Both support in-body stabilization (ibis)
  • Weather sealingBoth support weather sealing

Pros & cons at a glance

Editorially curated highlights and trade-offs.

Lumix G9

Pros

  • 60fps electronic burst
  • Strong IBIS
  • Weather sealed
  • Large EVF

Cons

  • Older contrast AF
  • MFT sensor
  • Superseded by G9 II

Alpha 1 II

Pros

  • 50MP stacked sensor
  • 30fps blackout-free burst
  • 8K 30p video
  • Best Sony AF

Cons

  • Very expensive
  • Complex menus
  • Large files

Decided which one is right for you?

Compare live prices for the Lumix G9 and Alpha 1 II at major authorized retailers.

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Full specifications

= category winner

Lumix G9
Alpha 1 II
Resolution
20.3 MP
50.1 MP2.5× more
Sensor type
Four Thirds Live MOS
Full Frame Stacked Exmor RS CMOS
Sensor size
17.3 x 13.0 mm
35.9 × 24.0 mm
AA filter
No
Yes
Lumix G9
Alpha 1 II
Processor
Venus Engine
BIONZ XR + AI processing unit
Lumix G9
Alpha 1 II
ISO min (native)
200
100−100 less
ISO max (native)
25,600
32,000+0.3 stops
ISO max (expanded)
25,600
102,400
Lumix G9
Alpha 1 II
Shutter type
Focal-plane mechanical + electronic shutter
Mechanical + Electronic
Max mechanical speed
1/8000 sec
1/8000 sec
Max electronic speed
1/32000 sec
1/32000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for landscape, Lumix G9 or Alpha 1 II?

Alpha 1 II scores 9.0/10 versus 3.5/10 for Lumix G9 — 50.1MP — massive detail for large prints.

What's the resolution difference between the Lumix G9 and Alpha 1 II?

Lumix G9 is 20.3 MP and Alpha 1 II is 50.1 MP, so the Alpha 1 II captures more detail for cropping and large prints.

Do the Lumix G9 and Alpha 1 II have in-body image stabilization?

Lumix G9 has 6.5-stop in-body image stabilization, while Alpha 1 II has 8.5-stop in-body image stabilization.

Which shoots faster bursts — the Lumix G9 or the Alpha 1 II?

Lumix G9 reaches 60 fps electronic. Alpha 1 II reaches 30 fps electronic.

What's the weight difference between the Lumix G9 and Alpha 1 II?

Lumix G9 weighs 658 g and Alpha 1 II weighs 743 g, so the Lumix G9 is 85 g lighter.

Do the Lumix G9 and Alpha 1 II record 4K video?

Lumix G9: 4K up to 60p. Alpha 1 II: 8K (max), 4K up to 120p.

Are the Lumix G9 and Alpha 1 II weather sealed?

Lumix G9: Yes. Alpha 1 II: Yes.

Which has better battery life?

Rated battery life is 400 shots (CIPA) for the Lumix G9 and 520 shots for the Alpha 1 II, giving the Alpha 1 II the edge.

How much does each cost?

Lumix G9 launched at $1,699 and Alpha 1 II at $6,499. The Lumix G9 is $4,800 less.

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

Add any camera to get a three-way Lumix G9 vs Alpha 1 II vs X comparison.

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

Product images courtesy of Panasonic and Sony press materials.