Sony
Alpha 9
First stacked-sensor mirrorless sports camera with 20fps blackout-free shooting.
$4,499
Launch priceReleased Apr 2017
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 6.8 years newer.
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Wins
Alpha 9
Wins
Alpha 9 III
3 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 9 has higher Burst (mechanical) (5 fps vs 0 fps)
- BAlpha 9 III has higher Burst (electronic) (120 fps vs 20 fps)
- BAlpha 9 III has higher Max video bit rate (600 Mbps vs 100 Mbps)
- BAlpha 9 III has higher 4K max frame rate (120 fps vs 29.97 fps)
- BAlpha 9 III has higher EVF resolution (9,437,184 vs 3,686,400)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Alpha 9
127 × 96 × 63 mm
673 g (1.48 lb / 23.74 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 9 is 9mm narrower, 1mm shorter, and 20mm thinner than Alpha 9 III.
Alpha 9 is 30 g lighter than Alpha 9 III.
Depth (front-to-back): 63mm Alpha 9 · 83mm Alpha 9 III
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 9
127 × 96 mm
Credit card
85.6 × 54 mm
Alpha 9 III
136 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 9
127 × 63 mm
Credit card
85.6 × 54 mm
Alpha 9 III
136 × 83 mm
Sensor size, to scale
Alpha 9
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 9
✓ 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 9
Burst (mechanical)
5 fps vs 0 fps — higher is better
Dimensions (W×H×D mm)
Adds 126.9, 95.6, 63
Card types
Adds SD, SDHC, SDXC…
Codecs
Adds AVCHD, MP4
ISO min (native)
100 vs 250 — lower is better
ISO max (native)
51,200 vs 25,600 — higher is better
Battery life (CIPA)
650 shots vs 400 shots — higher is better
Weight
673 g vs 703 g — lower is better
Reasons to choose
Alpha 9 III
AF low-light limit
-5 EV vs -3 EV — lower is better
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Card types
Adds CFexpress Type A, SD UHS-II
Burst (electronic)
120 fps vs 20 fps — higher is better
Max video bit rate
600 Mbps vs 100 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S-I, H.265…
4K max frame rate
120 fps vs 29.97 fps — higher is better
Subject recognition
Adds Bird, Insect, Car/Train…
Both cameras share
- ✓AA filter — Both support aa filter
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓RAW buffer depth — Both 200 frames
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 9
Pros
- ✓Stacked sensor pioneer
- ✓20fps silent burst
- ✓Pro sports AF
Cons
- –Superseded by A9 II/III
- –24MP
- –Expensive when new
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 9 and Alpha 9 III at major authorized retailers.
Sony Alpha 9
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 9 or Alpha 9 III?
Alpha 9 III scores 10.0/10 versus 6.5/10 for Alpha 9 — 120fps burst — pro-level action capture.
What's the resolution difference between the Alpha 9 and Alpha 9 III?
Alpha 9 is 24.2 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 9 and Alpha 9 III have in-body image stabilization?
Alpha 9 has 5-stop in-body image stabilization, while Alpha 9 III has 8-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 9 or the Alpha 9 III?
Alpha 9 reaches 20 fps electronic. Alpha 9 III reaches 120 fps electronic.
What's the weight difference between the Alpha 9 and Alpha 9 III?
Alpha 9 weighs 673 g and Alpha 9 III weighs 703 g, so the Alpha 9 is 30 g lighter.
Do the Alpha 9 and Alpha 9 III record 4K video?
Alpha 9: 4K up to 29.97p. Alpha 9 III: 4K up to 120p.
Are the Alpha 9 and Alpha 9 III weather sealed?
Alpha 9: Yes. Alpha 9 III: Yes.
Which has better battery life?
Rated battery life is 650 shots (CIPA) for the Alpha 9 and 400 shots for the Alpha 9 III, giving the Alpha 9 the edge.
How much does each cost?
Alpha 9 launched at $4,499 and Alpha 9 III at $5,999. The Alpha 9 is $1,500 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 9 vs Alpha 9 III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sony press materials.