Nikon
Z9
Flagship stacked mirrorless with 45MP, 8K video, and no mechanical shutter.
$5,899
Released Oct 2021
Sony
Alpha 7R VI
66.8MP fully-stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's new BIONZ XR2 engine.
$4,499
Released Jun 2026
Alpha 7R VI is 4.6 years newer.
Wins
Z9
Wins
Alpha 7R VI
2 categories tied
TL;DR — Key differences
- AZ9 has higher RAW buffer depth (1000 frames vs 150 frames)
- AZ9 has higher Burst (electronic) (120 fps vs 30 fps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 3,690,000)
- BAlpha 7R VI has lower Weight (713 g vs 1340 g)
- AZ9 has lower ISO min (native) (64 vs 100)
Key specs at a glance
Size and weight, to scale
Z9
149 × 150 × 91 mm
1340 g (2.95 lb / 47.27 oz)
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
Z9 is 16mm wider, 53mm taller, and 8mm thicker than Alpha 7R VI.
Z9 is 627 g heavier than Alpha 7R VI.
Depth (front-to-back): 91mm Z9 · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
Z9
149 × 150 mm
Alpha 7R VI
133 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Z9
149 × 91 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
Z9
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
Z9
Nikon Z
90+
native lenses available
Alpha 7R VI
✓ 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 -6 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 150 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 7R VI
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
EVF resolution
9,437,184 vs 3,690,000 — higher is better
Weight
713 g vs 1340 g — lower is better
AF points / zones
759 vs 493 — higher is better
Resolution
66.8 MP vs 45.7 MP — higher 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
- ✓In-body stabilization — Both support in-body stabilization
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
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 7R VI
Pros
- ✓66.8MP fully-stacked Exmor RS sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓8.5-stop in-body stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Z9 or Alpha 7R VI?
Z9 scores 9.0/10 versus 5.5/10 for Alpha 7R VI — 120fps burst — pro-level action capture.
What's the resolution difference between the Z9 and Alpha 7R VI?
Z9 is 45.7 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the Z9 and Alpha 7R VI have in-body image stabilization?
Z9 has 6-stop in-body image stabilization, while alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the Z9 or the Alpha 7R VI?
Z9 reaches 120 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the Z9 and Alpha 7R VI?
Z9 weighs 1340 g and Alpha 7R VI weighs 713 g, so the Alpha 7R VI is 627 g lighter.
Do the Z9 and Alpha 7R VI record 4K video?
Z9: 8K UHD (max), 4K up to 120p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the Z9 and Alpha 7R VI weather sealed?
Z9: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 740 shots (CIPA) for the Z9 and 600 shots for the Alpha 7R VI, giving the Z9 the edge.
How much does each cost?
Z9 launched at $5,899 and Alpha 7R VI at $4,499. The Alpha 7R VI is $1,400 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Nikon and Sony press materials.