Sony
Alpha 7S III
12MP low-light video specialist with 4K 120p, 16-bit RAW HDMI, and excellent autofocus.
$3,499
Launch priceReleased Sep 2020
Sony
Alpha 9 III
Global shutter sports flagship with 120fps and zero rolling shutter for pro action.
$5,999
Launch priceReleased Jan 2024
Alpha 9 III is 3.4 years newer.
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Wins
Alpha 7S III
Wins
Alpha 9 III
7 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 7S III has higher Burst (mechanical) (10 fps vs 0 fps)
- BAlpha 9 III has higher Burst (electronic) (120 fps vs 10 fps)
- AAlpha 7S III has higher ISO max (native) (102,400 vs 25,600)
- AAlpha 7S III has lower ISO min (native) (80 vs 250)
- BAlpha 9 III has higher Resolution (24.6 MP vs 12.1 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareAlpha 7S III
129 × 97 × 81 mm
699 g (1.54 lb / 24.66 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 9 III
136 × 97 × 83 mm
703 g (1.55 lb / 24.80 oz)
Alpha 7S III is 7mm narrower and 2mm thinner than Alpha 9 III.
Alpha 7S III is 4 g lighter than Alpha 9 III.
Depth (front-to-back): 81mm Alpha 7S III · 83mm Alpha 9 III
Sensor size, to scale
Alpha 7S III
35.6 × 23.8 mm · Full Frame
847 mm² area
Alpha 9 III
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
Alpha 7S III
✓ more lensesSony E
350+
native lenses available
Alpha 9 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 7S III
AF low-light limit
-6 EV vs -5 EV — lower is better
Burst (mechanical)
10 fps vs 0 fps — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
ISO min (native)
80 vs 250 — lower is better
Dimensions (W×H×D mm)
Adds 128.9, 80.8
Battery life (CIPA)
600 shots vs 400 shots — higher is better
Weight
699 g vs 703 g — lower is better
Reasons to choose
Alpha 9 III
Burst (electronic)
120 fps vs 10 fps — higher is better
Subject recognition
Adds Bird, Insect, Car/Train…
Dimensions (W×H×D mm)
Adds 136.1, 82.9
Resolution
24.6 MP vs 12.1 MP — higher is better
Pre-Capture / Pre-Release
Only Alpha 9 III supports it
EVF refresh rate
240 Hz vs 120 Hz — higher is better
RAW buffer depth
200 frames vs 120 frames — higher is better
IBIS effectiveness
8 stops vs 5.5 stops — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓AF points / zones — Both 759
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 120 fps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
Alpha 9 III
Pros
- ✓Global shutter 120fps
- ✓Zero rolling shutter
- ✓Pro sports AF
- ✓Pre-capture buffer
Cons
- –24.6MP only
- –Premium price
- –Battery drain at max speed
Decided which one is right for you?
Compare live prices for the Alpha 7S III and Alpha 9 III at major authorized retailers.
Sony Alpha 7S III
Sony Alpha 9 III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Alpha 7S III or Alpha 9 III?
Alpha 9 III scores 10.0/10 versus 5.5/10 for Alpha 7S III — 120fps burst — pro-level action capture.
What's the resolution difference between the Alpha 7S III and Alpha 9 III?
Alpha 7S III is 12.1 MP and Alpha 9 III is 24.6 MP, so the Alpha 9 III captures more detail for cropping and large prints.
Do the Alpha 7S III and Alpha 9 III have in-body image stabilization?
Alpha 7S III has 5.5-stop in-body image stabilization, while Alpha 9 III has 8-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 7S III or the Alpha 9 III?
Alpha 7S III reaches 10 fps electronic. Alpha 9 III reaches 120 fps electronic.
What's the weight difference between the Alpha 7S III and Alpha 9 III?
Alpha 7S III weighs 699 g and Alpha 9 III weighs 703 g, so the Alpha 7S III is 4 g lighter.
Do the Alpha 7S III and Alpha 9 III record 4K video?
Alpha 7S III: 4K up to 120p. Alpha 9 III: 4K up to 120p.
Are the Alpha 7S III and Alpha 9 III weather sealed?
Alpha 7S III: Yes. Alpha 9 III: Yes.
Which has better battery life?
Rated battery life is 600 shots (CIPA) for the Alpha 7S III and 400 shots for the Alpha 9 III, giving the Alpha 7S III the edge.
How much does each cost?
Alpha 7S III launched at $3,499 and Alpha 9 III at $5,999. The Alpha 7S III is $2,500 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 7S III vs Alpha 9 III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.