Panasonic
Lumix S1R II
High-resolution 44.3MP full-frame L-mount body with 8K video, phase hybrid AF, and compact S-series ergonomics.
$3,299
Released Feb 2025
Sony
Alpha 1 II
50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.
$6,499
Released Nov 2024
Lumix S1R II is 3 months newer.
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.
Wins
Lumix S1R II
Wins
Alpha 1 II
3 categories tied
TL;DR — Key differences
- ALumix S1R II has higher Max video bit rate (1900 Mbps vs 150 Mbps)
- BAlpha 1 II has higher RAW buffer depth (200 frames vs 70 frames)
- BAlpha 1 II has higher EVF refresh rate (240 Hz vs 120 Hz)
- BAlpha 1 II has higher EVF resolution (9,437,184 vs 5,760,000)
- ALumix S1R II has higher ISO max (native) (51,200 vs 32,000)
Key specs at a glance
Size and weight, to scale
Lumix S1R II
134 × 102 × 92 mm
795 g (1.75 lb / 28.04 oz)
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
Lumix S1R II is 2mm narrower than Alpha 1 II but it is also 5mm taller and 9mm thicker.
Lumix S1R II is 52 g heavier than Alpha 1 II.
Depth (front-to-back): 92mm Lumix S1R II · 83mm Alpha 1 II
Sensor size, to scale
Lumix S1R II
35.8 × 23.9 mm · Full Frame
856 mm² area
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
Lumix S1R II: mount data unavailable
Alpha 1 II
✓ more lensesSony E
350+
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
Lumix S1R II
AF low-light limit
-6 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 134.3, 102.3, 91.8
Max video bit rate
1900 Mbps vs 150 Mbps — higher is better
Subject recognition
Adds Face, Eye, Car…
Codecs
Adds Apple ProRes RAW, Apple ProRes 422 HQ, MOV…
Card types
Adds CFexpress Type B
ISO max (native)
51,200 vs 32,000 — higher is better
Burst (electronic)
40 fps vs 30 fps — higher is better
Reasons to choose
Alpha 1 II
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Subject recognition
Adds Bird, Insect, Car/Train…
RAW buffer depth
200 frames vs 70 frames — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only Alpha 1 II supports it
Card types
Adds CFexpress Type A
EVF refresh rate
240 Hz vs 120 Hz — higher is better
EVF resolution
9,437,184 vs 5,760,000 — higher is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Burst (mechanical) — Both 10 fps
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 120 fps
- ✓Internal RAW video — Both support internal raw video
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Lumix S1R II
Pros
- ✓44.3MP full-frame BSI sensor
- ✓8K video
- ✓Phase Hybrid AF
- ✓CFexpress plus SD workflow
Cons
- –Large high-res files
- –Premium price
- –L-mount lens size
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 S1R II and Alpha 1 II at major authorized retailers.
Panasonic Lumix S1R II
Sony Alpha 1 II
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
Frequently asked
Quick answers generated from verified specs.
Which is better for travel, Lumix S1R II or Alpha 1 II?
Alpha 1 II scores 6.0/10 versus 4.5/10 for Lumix S1R II — 743g — manageable for travel.
What's the resolution difference between the Lumix S1R II and Alpha 1 II?
Lumix S1R II is 44.3 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 II and Alpha 1 II have in-body image stabilization?
Lumix S1R II has 8-stop in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the Lumix S1R II or the Alpha 1 II?
Lumix S1R II reaches 40 fps electronic. Alpha 1 II reaches 30 fps electronic.
What's the weight difference between the Lumix S1R II and Alpha 1 II?
Lumix S1R II weighs 795 g and Alpha 1 II weighs 743 g, so the Alpha 1 II is 52 g lighter.
Do the Lumix S1R II and Alpha 1 II record 4K video?
Lumix S1R II: 8K (max), 4K up to 120p. Alpha 1 II: 8K (max), 4K up to 120p.
Are the Lumix S1R II and Alpha 1 II weather sealed?
Lumix S1R II: Yes. Alpha 1 II: Yes.
Which has better battery life?
Rated battery life is 350 shots (CIPA) for the Lumix S1R II and 520 shots for the Alpha 1 II, giving the Alpha 1 II the edge.
How much does each cost?
Lumix S1R II launched at $3,299 and Alpha 1 II at $6,499. The Lumix S1R II is $3,200 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Panasonic and Sony press materials.