Sony
Alpha 9 III
Global shutter sports flagship with 120fps and zero rolling shutter for pro action.
$5,999
Launch priceReleased Jan 2024
Sony
FX5
2026 Cinema Line full-frame camera with 16.6MP stacked Exmor RS, 5K Open Gate, internal 16-bit X-OCN RAW, triple base ISO, and FX3-class compact mobility.
$4,899
Launch priceReleased Aug 2026
FX5 is 2.6 years newer.
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Wins
Alpha 9 III
Wins
FX5
6 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 9 III has higher Burst (electronic) (120 fps vs 0 fps)
- AAlpha 9 III has lower ISO min (native) (250 vs 800)
- AAlpha 9 III has higher Max video bit rate (600 Mbps vs 200 Mbps)
- AAlpha 9 III has higher ISO max (native) (25,600 vs 12,800)
- AAlpha 9 III has higher EVF refresh rate (240 Hz vs 120 Hz)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareAlpha 9 III
136 × 97 × 83 mm
703 g (1.55 lb / 24.80 oz)
Credit card
85.6 × 54 mm
for scale
FX5
132 × 79 × 87 mm
734 g (1.62 lb / 25.89 oz)
Alpha 9 III is 4mm thinner than FX5 but it is also 4mm wider and 18mm taller.
Alpha 9 III is 31 g lighter than FX5.
Depth (front-to-back): 83mm Alpha 9 III · 87mm FX5
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 9 III
136 × 97 mm
Credit card
85.6 × 54 mm
FX5
132 × 79 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 9 III
136 × 83 mm
Credit card
85.6 × 54 mm
FX5
132 × 87 mm
Sensor size, to scale
Alpha 9 III
35.6 × 23.8 mm · Full Frame
847 mm² area
FX5
35.7 × 23.8 mm · Full Frame
850 mm² area
Lens ecosystem
Native lens selection
Alpha 9 III
✓ more lensesSony E
350+
native lenses available
FX5
✓ 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 III
Burst (electronic)
120 fps vs 0 fps — higher is better
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
ISO min (native)
250 vs 800 — lower is better
Max video bit rate
600 Mbps vs 200 Mbps — higher is better
ISO max (native)
25,600 vs 12,800 — higher is better
Subject recognition
Adds Insect, Car/Train, Airplane
Pre-Capture / Pre-Release
Only Alpha 9 III supports it
EVF refresh rate
240 Hz vs 120 Hz — higher is better
Reasons to choose
FX5
AF low-light limit
-6 EV vs -5 EV — lower is better
Dimensions (W×H×D mm)
Adds 132.3, 79, 86.95
Codecs
Adds X-OCN LT, X-OCN C1, X-OCN C2
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 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
FX5
Pros
- ✓5K Open Gate + internal X-OCN RAW (LT / C1 / C2)
- ✓Triple base ISO 800 / 4000 / 12800 + Dual Gain
- ✓15+ stops DR (S-Log3) + BIONZ XR2 AI AF
- ✓5K 60p / 4K 120p / FHD 240p at launch
- ✓Compact body with IBIS, cooling, dual card slots
Cons
- –Body-only $4,899 — XLR handle / OLED EVF optional
- –Open Gate X-OCN only at launch (XAVC Open Gate via FW)
- –4K 240p / 5K 120p planned for 2027 firmware
- –No built-in EVF (optional DVF-EL1)
Decided which one is right for you?
Compare live prices for the Alpha 9 III and FX5 at major authorized retailers.
Sony Alpha 9 III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Alpha 9 III or FX5?
Alpha 9 III scores 9.5/10 versus 5.0/10 for FX5 — 120fps burst captures fleeting moments.
What's the resolution difference between the Alpha 9 III and FX5?
Alpha 9 III is 24.6 MP and FX5 is 16.6 MP, so the Alpha 9 III captures more detail for cropping and large prints.
Do the Alpha 9 III and FX5 have in-body image stabilization?
Alpha 9 III has 8-stop in-body image stabilization, while FX5 has 5.5-stop in-body image stabilization.
What's the weight difference between the Alpha 9 III and FX5?
Alpha 9 III weighs 703 g and FX5 weighs 734 g, so the Alpha 9 III is 31 g lighter.
Do the Alpha 9 III and FX5 record 4K video?
Alpha 9 III: 4K up to 120p. FX5: 4K up to 120p.
Are the Alpha 9 III and FX5 weather sealed?
Alpha 9 III: Yes. FX5: Yes.
How much does each cost?
Alpha 9 III launched at $5,999 and FX5 at $4,899. The FX5 is $1,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 9 III vs FX5 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sony press materials.