Panasonic
Lumix S1
Original L-mount full-frame hybrid that launched the S series.
$2,499
Launch priceReleased Feb 2019
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Launch priceReleased Oct 2021
Alpha 7 IV is 2.7 years newer.
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Wins
Lumix S1
Wins
Alpha 7 IV
6 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 90 frames)
- BAlpha 7 IV has higher AF points / zones (759 vs 225)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 200 Mbps)
- ALumix S1 has higher EVF resolution (5,760,000 vs 3,686,400)
- BAlpha 7 IV has lower Weight (658 g vs 1021 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareLumix S1
149 × 110 × 97 mm
1021 g (2.25 lb / 36.01 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
Lumix S1 is 18mm wider, 14mm taller, and 17mm thicker than Alpha 7 IV.
Lumix S1 is 363 g heavier than Alpha 7 IV.
Depth (front-to-back): 97mm Lumix S1 · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
Lumix S1
149 × 110 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Lumix S1
149 × 97 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
Lumix S1
35.6 × 23.8 mm · Full Frame
847 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
Lumix S1: 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 S1
AF low-light limit
-6 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 148.9, 110, 96.7
Card types
Adds CFexpress Type B, XQD
Codecs
Adds MOV, MP4, AVCHD
Subject recognition
Adds Face, Eye
EVF resolution
5,760,000 vs 3,686,400 — higher is better
IBIS effectiveness
6 stops vs 5.5 stops — higher is better
AF frame coverage
100 % vs 94 % — 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 90 frames — higher is better
AF points / zones
759 vs 225 — higher is better
Subject recognition
Adds Bird, Insect, Car/Train…
Max video bit rate
600 Mbps vs 200 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only Alpha 7 IV supports it
Card types
Adds CFexpress Type A
Both cameras share
- ✓ISO min (native) — Both 100
- ✓ISO max (native) — Both 51,200
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 60 fps
- ✓Internal RAW video — Both support internal raw video
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Lumix S1
Pros
- ✓Rugged build
- ✓Dual slots
- ✓Strong video
Cons
- –Older AF
- –Heavy
- –Superseded by S5 II
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 S1 and Alpha 7 IV at major authorized retailers.
Panasonic Lumix S1
Sony Alpha 7 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Lumix S1 or Alpha 7 IV?
Alpha 7 IV scores 8.0/10 versus 4.0/10 for Lumix S1 — Bird AF subject recognition.
What's the resolution difference between the Lumix S1 and Alpha 7 IV?
Lumix S1 is 24.2 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the Lumix S1 and Alpha 7 IV have in-body image stabilization?
Lumix S1 has 6-stop in-body image stabilization, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the Lumix S1 or the Alpha 7 IV?
Lumix S1 reaches 9 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the Lumix S1 and Alpha 7 IV?
Lumix S1 weighs 1021 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 363 g lighter.
Do the Lumix S1 and Alpha 7 IV record 4K video?
Lumix S1: 6K (max), 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the Lumix S1 and Alpha 7 IV weather sealed?
Lumix S1: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 400 shots (CIPA) for the Lumix S1 and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
Both launched at $2,499.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Lumix S1 vs Alpha 7 IV 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.