Nikon
Z9
Flagship stacked mirrorless with 45MP, 8K video, and no mechanical shutter.
$5,899
Released Oct 2021
Sony
Alpha 9 III
Global shutter sports flagship with 120fps and zero rolling shutter for pro action.
$5,999
Released Jan 2024
Alpha 9 III is 2.3 years newer.
Wins
Z9
Wins
Alpha 9 III
5 categories tied
Check current prices
Search these camera bodies at major authorized retailers to check current discounts, bundled lenses, and certified refurbished deals:
TL;DR — Key differences
- AZ9 has higher RAW buffer depth (1000 frames vs 200 frames)
- AZ9 has lower ISO min (native) (64 vs 250)
- BAlpha 9 III has higher EVF resolution (9,437,184 vs 3,690,000)
- BAlpha 9 III has lower Weight (703 g vs 1340 g)
- AZ9 has higher Resolution (45.7 MP vs 24.6 MP)
Key specs at a glance
Size and weight, to scale
Z9
149 × 150 × 91 mm
1340 g (2.95 lb / 47.27 oz)
Alpha 9 III
136 × 97 × 83 mm
703 g (1.55 lb / 24.80 oz)
Z9 is 13mm wider, 53mm taller, and 8mm thicker than Alpha 9 III.
Z9 is 637 g heavier than Alpha 9 III.
Depth (front-to-back): 91mm Z9 · 83mm Alpha 9 III
Back view, to scale
Width × Height — same proportions as the front of the body.
Z9
149 × 150 mm
Alpha 9 III
136 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Z9
149 × 91 mm
Alpha 9 III
136 × 83 mm
Sensor size, to scale
Z9
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 9 III
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
Z9
Nikon Z
90+
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
Z9
AF low-light limit
-8.5 EV vs -5 EV — lower is better
Subject recognition
Adds People, Birds, Dogs…
Codecs
Adds N-RAW, ProRes RAW HQ, ProRes 422 HQ…
Dimensions (W×H×D mm)
Adds 149, 149.5, 90.5
Card types
Adds CFexpress Type B / XQD, CFexpress Type B / XQD
RAW buffer depth
1000 frames vs 200 frames — higher is better
ISO min (native)
64 vs 250 — lower is better
Resolution
45.7 MP vs 24.6 MP — higher is better
Reasons to choose
Alpha 9 III
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Card types
Adds CFexpress Type A, SD UHS-II
EVF resolution
9,437,184 vs 3,690,000 — higher is better
AA filter
Only Alpha 9 III supports it
Weight
703 g vs 1340 g — lower is better
AF points / zones
759 vs 493 — higher is better
Both cameras share
- ✓ISO max (native) — Both 25,600
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Burst (electronic) — Both 120 fps
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 120 fps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Z9
Pros
- ✓45MP stacked
- ✓8K 60p internal
- ✓120fps stills
- ✓Pro build
Cons
- –Heavy body
- –Expensive
- –Large files
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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Z9 or Alpha 9 III?
Alpha 9 III scores 9.5/10 versus 5.5/10 for Z9 — 120fps burst captures fleeting moments.
What's the resolution difference between the Z9 and Alpha 9 III?
Z9 is 45.7 MP and Alpha 9 III is 24.6 MP, so the Z9 captures more detail for cropping and large prints.
Do the Z9 and Alpha 9 III have in-body image stabilization?
Z9 has 6-stop in-body image stabilization, while alpha 9 III has 8-stop in-body image stabilization.
Which shoots faster bursts — the Z9 or the Alpha 9 III?
Z9 reaches 120 fps electronic. Alpha 9 III reaches 120 fps electronic.
What's the weight difference between the Z9 and Alpha 9 III?
Z9 weighs 1340 g and Alpha 9 III weighs 703 g, so the Alpha 9 III is 637 g lighter.
Do the Z9 and Alpha 9 III record 4K video?
Z9: 8K UHD (max), 4K up to 120p. Alpha 9 III: 4K up to 120p.
Are the Z9 and Alpha 9 III weather sealed?
Z9: Yes. Alpha 9 III: Yes.
Which has better battery life?
Rated battery life is 740 shots (CIPA) for the Z9 and 400 shots for the Alpha 9 III, giving the Z9 the edge.
How much does each cost?
Z9 launched at $5,899 and Alpha 9 III at $5,999. The Z9 is $100 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Nikon and Sony press materials.