DJI
Osmo Action 6
Flagship DJI action camera with 1/1.1-inch CMOS sensor, variable f/2.0-f/4.0 lens, 8K 30p video, 4K 120p, 38MP stills, and 20m waterproofing.
$379
Released Nov 2025
Nikon
Z9
Flagship stacked mirrorless with 45MP, 8K video, and no mechanical shutter.
$5,899
Released Oct 2021
Osmo Action 6 is 4.1 years newer.
Wins
Osmo Action 6
Wins
Z9
1 categories tied
TL;DR — Key differences
- BZ9 has higher AF points / zones (493 vs 0)
- AOsmo Action 6 has higher Burst (mechanical) (8 fps vs 0 fps)
- AOsmo Action 6 has lower Weight (149 g vs 1340 g)
- BZ9 has higher RAW buffer depth (1000 frames vs 120 frames)
- BZ9 has higher Burst (electronic) (120 fps vs 20 fps)
Key specs at a glance
Size and weight, to scale
Osmo Action 6
73 × 47 × 33 mm
149 g (0.33 lb / 5.26 oz)
Z9
149 × 150 × 91 mm
1340 g (2.95 lb / 47.27 oz)
Osmo Action 6 is 76mm narrower, 102mm shorter, and 57mm thinner than Z9.
Osmo Action 6 is 1191 g lighter than Z9.
Depth (front-to-back): 33mm Osmo Action 6 · 91mm Z9
Back view, to scale
Width × Height — same proportions as the front of the body.
Osmo Action 6
73 × 47 mm
Z9
149 × 150 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Osmo Action 6
73 × 33 mm
Z9
149 × 91 mm
Sensor size, to scale
Z9
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
Osmo Action 6: mount data unavailable
Z9
✓ more lensesNikon Z
90+
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
Osmo Action 6
Burst (mechanical)
8 fps vs 0 fps — higher is better
Codecs
Adds HEVC
Dimensions (W×H×D mm)
Adds 72.8, 47.2, 33.1
Card types
Adds microSD
Weight
149 g vs 1340 g — lower is better
ISO max (native)
51,200 vs 25,600 — higher is better
IBIS effectiveness
7 stops vs 6 stops — higher is better
Reasons to choose
Z9
AF points / zones
493 vs 0 — higher 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 120 frames — higher is better
Burst (electronic)
120 fps vs 20 fps — higher is better
Eye AF
Only Z9 supports it
Both cameras share
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 120 fps
- ✓Weather sealing — Both support weather sealing
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Osmo Action 6
Pros
- ✓8K 30p video
- ✓1/1.1-inch sensor
- ✓Variable f/2.0-f/4.0 aperture
- ✓20m waterproof without case
Cons
- –8K has mode limitations
- –Fixed ultra-wide lens
- –Small sensor vs compact cameras
Z9
Pros
- ✓45MP stacked
- ✓8K 60p internal
- ✓120fps stills
- ✓Pro build
Cons
- –Heavy body
- –Expensive
- –Large files
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, Osmo Action 6 or Z9?
Z9 scores 8.5/10 versus 2.5/10 for Osmo Action 6 — 45.7MP — excellent for large prints and crops.
What's the resolution difference between the Osmo Action 6 and Z9?
Osmo Action 6 is 38 MP and Z9 is 45.7 MP, so the Z9 captures more detail for cropping and large prints.
Do the Osmo Action 6 and Z9 have in-body image stabilization?
Osmo Action 6 does not have IBIS, while z9 has 6-stop in-body image stabilization.
Which shoots faster bursts — the Osmo Action 6 or the Z9?
Osmo Action 6 reaches 20 fps electronic. Z9 reaches 120 fps electronic.
What's the weight difference between the Osmo Action 6 and Z9?
Osmo Action 6 weighs 149 g and Z9 weighs 1340 g, so the Osmo Action 6 is 1191 g lighter.
Do the Osmo Action 6 and Z9 record 4K video?
Osmo Action 6: 8K (max), 4K up to 120p. Z9: 8K UHD (max), 4K up to 120p.
Are the Osmo Action 6 and Z9 weather sealed?
Osmo Action 6: Yes. Z9: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the Osmo Action 6 and 740 shots for the Z9, giving the Z9 the edge.
How much does each cost?
Osmo Action 6 launched at $379 and Z9 at $5,899. The Osmo Action 6 is $5,520 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of DJI and Nikon press materials.