Nikon
Z9
Flagship stacked mirrorless with 45MP, 8K video, and no mechanical shutter.
$5,899
Released Oct 2021
Sony
Alpha 1
Original 50MP stacked flagship for sports and wildlife pros.
$6,499
Released Jan 2021
Z9 is 9 months newer.
Wins
Z9
Wins
Alpha 1
2 categories tied
TL;DR — Key differences
- BAlpha 1 has higher Burst (mechanical) (10 fps vs 0 fps)
- AZ9 has higher RAW buffer depth (1000 frames vs 200 frames)
- AZ9 has higher Burst (electronic) (120 fps vs 30 fps)
- BAlpha 1 has higher EVF resolution (9,437,184 vs 3,690,000)
- BAlpha 1 has lower Weight (737 g vs 1340 g)
Key specs at a glance
Size and weight, to scale
Z9
149 × 150 × 91 mm
1340 g (2.95 lb / 47.27 oz)
Alpha 1
129 × 97 × 81 mm
737 g (1.62 lb / 26.00 oz)
Z9 is 20mm wider, 53mm taller, and 10mm thicker than Alpha 1.
Z9 is 603 g heavier than Alpha 1.
Depth (front-to-back): 91mm Z9 · 81mm Alpha 1
Back view, to scale
Width × Height — same proportions as the front of the body.
Z9
149 × 150 mm
Alpha 1
129 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Z9
149 × 91 mm
Alpha 1
129 × 81 mm
Sensor size, to scale
Z9
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 1
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
Z9
Nikon Z
90+
native lenses available
Alpha 1
✓ 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 -4 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
Burst (electronic)
120 fps vs 30 fps — higher is better
Pre-Capture / Pre-Release
Only Z9 supports it
Reasons to choose
Alpha 1
Subject recognition
Adds Human, Animal, Bird
Burst (mechanical)
10 fps vs 0 fps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 128.9, 96.9, 80.8
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 1 supports it
Weight
737 g vs 1340 g — lower is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 120 fps
- ✓Internal RAW video — Both support internal raw video
- ✓In-body stabilization — Both support in-body stabilization
- ✓Weather sealing — Both support weather sealing
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 1
Pros
- ✓50MP stacked
- ✓30fps burst
- ✓8K video
- ✓Pro AF
Cons
- –Superseded by A1 II
- –Very expensive
- –Large files
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Z9 or Alpha 1?
Z9 scores 9.0/10 versus 6.5/10 for Alpha 1 — 120fps burst — pro-level action capture.
What's the resolution difference between the Z9 and Alpha 1?
Z9 is 45.7 MP and Alpha 1 is 50.1 MP, so the Alpha 1 captures more detail for cropping and large prints.
Do the Z9 and Alpha 1 have in-body image stabilization?
Z9 has 6-stop in-body image stabilization, while alpha 1 has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the Z9 or the Alpha 1?
Z9 reaches 120 fps electronic. Alpha 1 reaches 30 fps electronic.
What's the weight difference between the Z9 and Alpha 1?
Z9 weighs 1340 g and Alpha 1 weighs 737 g, so the Alpha 1 is 603 g lighter.
Do the Z9 and Alpha 1 record 4K video?
Z9: 8K UHD (max), 4K up to 120p. Alpha 1: 8K (max), 4K up to 120p.
Are the Z9 and Alpha 1 weather sealed?
Z9: Yes. Alpha 1: Yes.
Which has better battery life?
Rated battery life is 740 shots (CIPA) for the Z9 and 530 shots for the Alpha 1, giving the Z9 the edge.
How much does each cost?
Z9 launched at $5,899 and Alpha 1 at $6,499. The Z9 is $600 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Nikon and Sony press materials.