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 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
Lumix S1R II is 3.3 years newer.
Wins
Lumix S1R II
Wins
Alpha 7 IV
5 categories tied
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TL;DR — Key differences
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 70 frames)
- ALumix S1R II has higher Burst (electronic) (40 fps vs 10 fps)
- ALumix S1R II has higher Max video bit rate (1900 Mbps vs 600 Mbps)
- ALumix S1R II has higher 4K max frame rate (120 fps vs 60 fps)
- BAlpha 7 IV has higher Battery life (CIPA) (580 shots vs 350 shots)
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 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
Lumix S1R II is 3mm wider, 6mm taller, and 12mm thicker than Alpha 7 IV.
Lumix S1R II is 137 g heavier than Alpha 7 IV.
Depth (front-to-back): 92mm Lumix S1R II · 80mm Alpha 7 IV
Sensor size, to scale
Lumix S1R II
35.8 × 23.9 mm · Full Frame
856 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
Lumix S1R II: mount data unavailable
Alpha 7 IV
✓ 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
Burst (electronic)
40 fps vs 10 fps — higher is better
Max video bit rate
1900 Mbps vs 600 Mbps — higher is better
Subject recognition
Adds Face, Eye, Car…
Codecs
Adds Apple ProRes RAW, Apple ProRes 422 HQ, MOV…
Pre-Capture / Pre-Release
Only Lumix S1R II supports it
4K max frame rate
120 fps vs 60 fps — higher is better
Reasons to choose
Alpha 7 IV
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 70 frames — higher is better
Subject recognition
Adds Bird, Insect, Car/Train…
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only Alpha 7 IV supports it
Card types
Adds CFexpress Type A
Battery life (CIPA)
580 shots vs 350 shots — higher is better
Weight
658 g vs 795 g — lower is better
Both cameras share
- ✓ISO max (native) — Both 51,200
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Burst (mechanical) — Both 10 fps
- ✓Internal RAW video — Both support internal raw video
- ✓In-body stabilization — Both support in-body stabilization
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 7 IV
Pros
- ✓33MP — more detail for cropping and print
- ✓10-bit 4K 60p (Super35 crop) / 4K 30p full-frame
- ✓Full-size HDMI port
- ✓759 phase-detect AF points
Cons
- –4K 60p requires Super35 crop
- –10fps burst lags behind R6 II at 40fps
- –Complex menu system
Decided which one is right for you?
Compare live prices for the Lumix S1R II and Alpha 7 IV at major authorized retailers.
Panasonic Lumix S1R II
Sony Alpha 7 IV
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for travel, Lumix S1R II or Alpha 7 IV?
Alpha 7 IV scores 7.0/10 versus 4.5/10 for Lumix S1R II — 658g — manageable for travel.
What's the resolution difference between the Lumix S1R II and Alpha 7 IV?
Lumix S1R II is 44.3 MP and Alpha 7 IV is 33 MP, so the Lumix S1R II captures more detail for cropping and large prints.
Do the Lumix S1R II and Alpha 7 IV have in-body image stabilization?
Lumix S1R II has 8-stop in-body image stabilization, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the Lumix S1R II or the Alpha 7 IV?
Lumix S1R II reaches 40 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the Lumix S1R II and Alpha 7 IV?
Lumix S1R II weighs 795 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 137 g lighter.
Do the Lumix S1R II and Alpha 7 IV record 4K video?
Lumix S1R II: 8K (max), 4K up to 120p. Alpha 7 IV: 4K up to 60p.
Are the Lumix S1R II and Alpha 7 IV weather sealed?
Lumix S1R II: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 350 shots (CIPA) for the Lumix S1R II and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
Lumix S1R II launched at $3,299 and Alpha 7 IV at $2,499. The Alpha 7 IV is $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.