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Panasonic

Lumix S1R

47MP L-mount resolution body for detail work.

$3,699

Released Feb 2019

vs
Alpha 1 II

Sony

Alpha 1 II

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

$6,499

Released Nov 2024

Alpha 1 II is 5.8 years newer.

Wins

2categories

Lumix S1R

PortraitLandscape

Wins

13categories

Alpha 1 II

Video & HybridWildlife

3 categories tied

TL;DR — Key differences

Lumix S1R wins 0 categories·Alpha 1 II wins 5 categories
  • BAlpha 1 II has higher RAW buffer depth (200 frames vs 40 frames)
  • BAlpha 1 II has higher AF points / zones (759 vs 225)
  • BAlpha 1 II has higher Burst (electronic) (30 fps vs 9 fps)
  • BAlpha 1 II has higher 4K max frame rate (120 fps vs 60 fps)
  • BAlpha 1 II has higher EVF refresh rate (240 Hz vs 120 Hz)

Key specs at a glance

Lumix S1RAlpha 1 II
Resolution47.3 MP50.1 MP
SensorFull FrameFull Frame
ISO max25,60032,000
Burst9 fps30 fps
4K60 fps120 fps
IBIS6-stop8.5-stop
Weight1020 g743 g
Battery380 shots520 shots

Size and weight, to scale

Lumix S1R

149 × 110 × 97 mm

1020 g (2.25 lb / 35.98 oz)

Alpha 1 II front view

Alpha 1 II

136 × 97 × 83 mm

743 g (1.64 lb / 26.21 oz)

Lumix S1R is 13mm wider, 13mm taller, and 14mm thicker than Alpha 1 II.

Lumix S1R is 277 g heavier than Alpha 1 II.

Depth (front-to-back): 97mm Lumix S1R · 83mm Alpha 1 II

Sensor size, to scale

Lumix S1R

36 × 24 mm · Full Frame

864 mm² area

Alpha 1 II

35.9 × 24 mm · Full Frame

862 mm² area

Lens ecosystem

Native lens selection

Lumix S1R: mount data unavailable

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 S1RAlpha 1 II
Portrait
8.5Excellent
8.5Excellent
Sports & Action
3.5Limited
9.0Excellent✓ wins
Video & Hybrid
6.0Good
9.5Excellent✓ wins
Landscape
8.5Excellent
9.0Excellent✓ wins
Travel
4.5Fair
6.0Good✓ wins
Wildlife
3.0Limited
9.5Excellent✓ wins
Vlogging
5.5Fair
5.5Fair

Why pick one over the other

Reasons to choose

Lumix S1R

  • AF low-light limit

    -6 EV vs -4 EV — lower is better

  • Dimensions (W×H×D mm)

    Adds 148.9, 110, 96.7

  • Codecs

    Adds MP4, AVCHD

  • Subject recognition

    Adds Face, Eye

  • Card types

    Adds XQD

  • 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

  • RAW buffer depth

    200 frames vs 40 frames — higher is better

  • Codecs

    Adds XAVC HS, XAVC S, XAVC S-I…

  • AF points / zones

    759 vs 225 — higher is better

  • Burst (electronic)

    30 fps vs 9 fps — higher is better

  • Subject recognition

    Adds Bird, Insect, Car/Train…

  • AA filter

    Only Alpha 1 II supports it

  • Pre-Capture / Pre-Release

    Only Alpha 1 II supports it

Both cameras share

  • ISO min (native)Both 100
  • Eye AFBoth support eye af
  • Animal / bird AFBoth support animal / bird af
  • Max video bit rateBoth 150 Mbps
  • In-body stabilizationBoth support in-body stabilization
  • Weather sealingBoth support weather sealing

Pros & cons at a glance

Editorially curated highlights and trade-offs.

Lumix S1R

Pros

  • 47MP
  • High detail
  • L-mount

Cons

  • Contrast AF era
  • Heavy
  • Superseded

Alpha 1 II

Pros

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

Cons

  • Very expensive
  • Complex menus
  • Large files

Full specifications

= category winner

Lumix S1R
Alpha 1 II
Resolution
47.3 MP
50.1 MP+6%
Sensor type
35mm Full-Frame CMOS
Full Frame Stacked Exmor RS CMOS
Sensor size
36.0 x 24.0 mm
35.9 × 24.0 mm
AA filter
No
Yes
Lumix S1R
Alpha 1 II
AF system
Contrast AF with DFD technology
Fast Hybrid AF (phase-detection / contrast-detection)
AF points / zones
225
7593.4× more
AF frame coverage
100 %+6%
94 %
AF low-light limit
-6 EV
-4 EV
Eye AF
Yes
Yes
Animal / bird AF
Yes
Yes
Subject recognition
Human, Face, Eye, Animal
Human, Animal, Bird, Insect, Car/Train, Airplane
Lumix S1R
Alpha 1 II
Burst (mechanical)
9 fps
10 fps+11%
Burst (electronic)
9 fps
30 fps3.3× more
Pre-Capture / Pre-Release
No
Yes
RAW buffer depth
40 frames
200 frames5× more
Lumix S1R
Alpha 1 II
Max resolution
4K
8K
4K max frame rate
60 fps
120 fps2× more
Max video bit rate
150 Mbps
150 Mbps
Internal RAW video
No
Yes
Log profile
HLG
S-Log3 / HLG / S-Cinetone
Codecs
H.264, MP4, AVCHD
XAVC HS, XAVC S, XAVC S-I, H.265, H.264
Lumix S1R
Alpha 1 II
Weight
1020 g
743 g−277 g less
Dimensions (W×H×D mm)
148.9 × 110 × 96.7 mm
136.1 × 96.9 × 82.9 mm
Weather sealing
Yes
Yes

Frequently asked

Quick answers generated from verified specs.

Which is better for wildlife, Lumix S1R or Alpha 1 II?

Alpha 1 II scores 9.5/10 versus 3.0/10 for Lumix S1R — 30fps burst captures fleeting moments.

What's the resolution difference between the Lumix S1R and Alpha 1 II?

Lumix S1R is 47.3 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 S1R and Alpha 1 II have in-body image stabilization?

Lumix S1R has 6-stop in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.

Which shoots faster bursts — the Lumix S1R or the Alpha 1 II?

Lumix S1R reaches 9 fps electronic. Alpha 1 II reaches 30 fps electronic.

What's the weight difference between the Lumix S1R and Alpha 1 II?

Lumix S1R weighs 1020 g and Alpha 1 II weighs 743 g, so the Alpha 1 II is 277 g lighter.

Do the Lumix S1R and Alpha 1 II record 4K video?

Lumix S1R: 4K up to 60p. Alpha 1 II: 8K (max), 4K up to 120p.

Are the Lumix S1R and Alpha 1 II weather sealed?

Lumix S1R: Yes. Alpha 1 II: Yes.

Which has better battery life?

Rated battery life is 380 shots (CIPA) for the Lumix S1R and 520 shots for the Alpha 1 II, giving the Alpha 1 II the edge.

How much does each cost?

Lumix S1R launched at $3,699 and Alpha 1 II at $6,499. The Lumix S1R is $2,800 less.

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

Product images courtesy of Panasonic and Sony press materials.