Sony
Alpha 7R VI
66.8MP fully-stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's new BIONZ XR2 engine.
$4,499
Released Jun 2026
Sony
Alpha 7S III
12MP low-light video specialist with 4K 120p, 16-bit RAW HDMI, and excellent autofocus.
$3,499
Released Sep 2020
Alpha 7R VI is 5.8 years newer.
Wins
Alpha 7R VI
Wins
Alpha 7S III
8 categories tied
TL;DR — Key differences
- AAlpha 7R VI has higher Resolution (66.8 MP vs 12.1 MP)
- BAlpha 7S III has higher ISO max (native) (102,400 vs 32,000)
- AAlpha 7R VI has higher Burst (electronic) (30 fps vs 10 fps)
- BAlpha 7S III has lower ISO min (native) (80 vs 100)
- AAlpha 7R VI has higher RAW buffer depth (150 frames vs 120 frames)
Key specs at a glance
Size and weight, to scale
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
Alpha 7S III
129 × 97 × 81 mm
699 g (1.54 lb / 24.66 oz)
Alpha 7R VI is 4mm wider and 2mm thicker than Alpha 7S III.
Alpha 7R VI is 14 g heavier than Alpha 7S III.
Depth (front-to-back): 83mm Alpha 7R VI · 81mm Alpha 7S III
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 7R VI
133 × 97 mm
Alpha 7S III
129 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 7R VI
133 × 83 mm
Alpha 7S III
129 × 81 mm
Sensor size, to scale
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
Alpha 7S III
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
Alpha 7R VI
✓ more lensesSony E
350+
native lenses available
Alpha 7S III
✓ 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
Alpha 7R VI
Resolution
66.8 MP vs 12.1 MP — higher is better
Subject recognition
Adds Bird, Eye, Insect…
Burst (electronic)
30 fps vs 10 fps — higher is better
Dimensions (W×H×D mm)
Adds 132.7, 82.9
Card types
Adds SDXC UHS-II
RAW buffer depth
150 frames vs 120 frames — higher is better
Reasons to choose
Alpha 7S III
ISO max (native)
102,400 vs 32,000 — higher is better
Dimensions (W×H×D mm)
Adds 128.9, 80.8
AA filter
Only Alpha 7S III supports it
Internal RAW video
Only Alpha 7S III supports it
Weather sealing
Only Alpha 7S III supports it
Card types
Adds SD UHS-II
ISO min (native)
80 vs 100 — lower is better
Weight
699 g vs 713 g — lower is better
Both cameras share
- ✓AF points / zones — Both 759
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 120 fps
- ✓Max video bit rate — Both 600 Mbps
- ✓In-body stabilization — Both support in-body stabilization
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 7R VI
Pros
- ✓66.8MP fully-stacked Exmor RS sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓8.5-stop in-body stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Alpha 7S III
Pros
- ✓Best-in-class low light
- ✓4K 120p
- ✓Full-size HDMI
- ✓Strong IBIS
Cons
- –12MP stills limit
- –Older generation now
- –No 8K
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, Alpha 7R VI or Alpha 7S III?
Alpha 7R VI scores 8.5/10 versus 6.5/10 for Alpha 7S III — 66.8MP — excellent for large prints and crops.
What's the resolution difference between the Alpha 7R VI and Alpha 7S III?
Alpha 7R VI is 66.8 MP and Alpha 7S III is 12.1 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the Alpha 7R VI and Alpha 7S III have in-body image stabilization?
Alpha 7R VI has in-body image stabilization, while alpha 7S III has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 7R VI or the Alpha 7S III?
Alpha 7R VI reaches 30 fps electronic. Alpha 7S III reaches 10 fps electronic.
What's the weight difference between the Alpha 7R VI and Alpha 7S III?
Alpha 7R VI weighs 713 g and Alpha 7S III weighs 699 g, so the Alpha 7S III is 14 g lighter.
Do the Alpha 7R VI and Alpha 7S III record 4K video?
Alpha 7R VI: 8K (max), 4K up to 120p. Alpha 7S III: 4K up to 120p.
Are the Alpha 7R VI and Alpha 7S III weather sealed?
Alpha 7R VI: No. Alpha 7S III: Yes.
Which has better battery life?
Rated battery life is 600 shots (CIPA) for the Alpha 7R VI and 600 shots for the Alpha 7S III, giving the Alpha 7S III the edge.
How much does each cost?
Alpha 7R VI launched at $4,499 and Alpha 7S III at $3,499. The Alpha 7S III is $1,000 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Sony press materials.