DJI
Osmo Action 3
Rugged 1/1.7-inch action camera with 4K 120p, dual touchscreens, RockSteady stabilization, and 16m waterproofing without a case.
$329
Launch priceReleased Sep 2022
Insta360
Luna Ultra
Flagship dual-lens 3-axis gimbal camera with Leica Summicron 1-inch 8K main lens, 1/1.3-inch telephoto, detachable 2-inch OLED screen, 8K30 / 4K120 video, and 37MP UltraPhoto.
$770
Launch priceReleased Jun 2026
Luna Ultra is 3.8 years newer.
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Wins
Osmo Action 3
Wins
Luna Ultra
4 categories tied
Which would you choose?
TL;DR — Key differences
- BLuna Ultra has higher Resolution (37 MP vs 12 MP)
- AOsmo Action 3 has higher ISO max (native) (12,800 vs 6,400)
- AOsmo Action 3 has higher Max video bit rate (200 Mbps vs 120 Mbps)
- AOsmo Action 3 has lower Weight (145 g vs 233 g)
- BLuna Ultra has higher Battery runtime (240 min vs 160 min)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareOsmo Action 3
71 × 44 × 33 mm
145 g (0.32 lb / 5.11 oz)
Credit card
85.6 × 54 mm
for scale
Luna Ultra
52 × 170 × 39 mm
233 g (0.51 lb / 8.22 oz)
Osmo Action 3 is 126mm shorter and 6mm thinner than Luna Ultra but it is also 18mm wider.
Osmo Action 3 is 88 g lighter than Luna Ultra.
Depth (front-to-back): 33mm Osmo Action 3 · 39mm Luna Ultra
Back view, to scale
Width × Height — same proportions as the front of the body.
Osmo Action 3
71 × 44 mm
Credit card
85.6 × 54 mm
Luna Ultra
52 × 170 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Osmo Action 3
71 × 33 mm
Credit card
85.6 × 54 mm
Luna Ultra
52 × 39 mm
Sensor size, to scale
Luna Ultra
13.2 × 8.8 mm · 1-inch
116 mm² area
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 3
Codecs
Adds H.264, HEVC
Stabilization modes
Adds RockSteady, HorizonBalancing, HorizonSteady
Dimensions (W×H×D mm)
Adds 70.5, 44.2, 32.8
ISO max (native)
12,800 vs 6,400 — higher is better
Pre-Capture / Pre-Release
Only Osmo Action 3 supports it
Weather sealing
Only Osmo Action 3 supports it
Max video bit rate
200 Mbps vs 120 Mbps — higher is better
Weight
145 g vs 233 g — lower is better
Reasons to choose
Luna Ultra
Codecs
Adds H.265
Dimensions (W×H×D mm)
Adds 52.4, 169.9, 38.5
Resolution
37 MP vs 12 MP — higher is better
Battery runtime
240 min vs 160 min — higher is better
IBIS effectiveness
8 stops vs 6 stops — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓4K max frame rate — Both 120 fps
- ✓1080p max frame rate — Both 240 fps
- ✓Card slots — Both 1
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Osmo Action 3
Pros
- ✓4K 120p
- ✓Dual touchscreens
- ✓16m waterproof without case
- ✓RockSteady and HorizonSteady
Cons
- –Older than Action 4/5 Pro
- –Small action-cam sensor
- –Fixed ultra-wide lens
Luna Ultra
Pros
- ✓Dual Leica lenses (1" + tele)
- ✓8K30 with 4K120 & 1080p240
- ✓Detachable 2" OLED screen
- ✓3-axis gimbal + Deep Track 5.0
Cons
- –Premium vs Pocket 3
- –No waterproofing
- –Tele reach capped at 240mm equiv
Decided which one is right for you?
Compare live prices for the Osmo Action 3 and Luna Ultra at major authorized retailers.
DJI Osmo Action 3
Insta360 Luna Ultra
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for travel, Osmo Action 3 or Luna Ultra?
Osmo Action 3 scores 7.0/10 versus 4.5/10 for Luna Ultra — 145g — ultralight for all-day carry.
What's the resolution difference between the Osmo Action 3 and Luna Ultra?
Osmo Action 3 is 12 MP and Luna Ultra is 37 MP, so the Luna Ultra captures more detail for cropping and large prints.
How does stabilization compare between the Osmo Action 3 and Luna Ultra?
Osmo Action 3 uses Electronic image stabilization (electronic), while Luna Ultra uses a 3-axis mechanical gimbal.
What's the weight difference between the Osmo Action 3 and Luna Ultra?
Osmo Action 3 weighs 145 g and Luna Ultra weighs 233 g, so the Osmo Action 3 is 88 g lighter.
Do the Osmo Action 3 and Luna Ultra record 4K video?
Osmo Action 3: 4K up to 120p. Luna Ultra: 8K (7680×4320) (max), 4K up to 120p.
Are the Osmo Action 3 and Luna Ultra weather sealed?
Osmo Action 3: Yes. Luna Ultra: No.
Which has better battery runtime?
Osmo Action 3 is rated for about 160 minutes of continuous recording and Luna Ultra for about 240 minutes, giving the Luna Ultra the edge.
How much does each cost?
Osmo Action 3 launched at $329 and Luna Ultra at $770. The Osmo Action 3 is $441 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Osmo Action 3 vs Luna Ultra vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of DJI and Insta360 press materials.