DJI
Osmo Pocket 3
Pocket gimbal camera with 1-inch sensor, 4K 120p, and rotating 2-inch OLED screen.
$519
Released Oct 2023
Pentax
K-3 Mark III
APS-C DSLR flagship with optical viewfinder and weather sealing.
$1,999
Released Apr 2021
Osmo Pocket 3 is 2.5 years newer.
Wins
Osmo Pocket 3
Wins
K-3 Mark III
2 categories tied
TL;DR — Key differences
- AOsmo Pocket 3 has lower Weight (179 g vs 520 g)
- BK-3 Mark III has higher Resolution (25.7 MP vs 9.4 MP)
- AOsmo Pocket 3 has lower ISO min (native) (50 vs 100)
- BK-3 Mark III has higher RAW buffer depth (120 frames vs 60 frames)
- BK-3 Mark III has higher Card slots (2 vs 1)
Key specs at a glance
Size and weight, to scale
Osmo Pocket 3
140 × 42 × 34 mm
179 g (0.39 lb / 6.31 oz)
K-3 Mark III
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
Osmo Pocket 3 is 56mm shorter and 55mm thinner than K-3 Mark III but it is also 2mm wider.
Osmo Pocket 3 is 341 g lighter than K-3 Mark III.
Depth (front-to-back): 34mm Osmo Pocket 3 · 88mm K-3 Mark III
Sensor size, to scale
K-3 Mark III
23.5 × 15.6 mm · APS-C
367 mm² area
Lens ecosystem
Native lens selection
Osmo Pocket 3: mount data unavailable
K-3 Mark III
✓ more lensesPentax K
70+
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 Pocket 3
Dimensions (W×H×D mm)
Adds 139.7, 42.2, 33.5
Card types
Adds microSD
Weight
179 g vs 520 g — lower is better
ISO min (native)
50 vs 100 — lower is better
Max video bit rate
200 Mbps vs 150 Mbps — higher is better
Reasons to choose
K-3 Mark III
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Card types
Adds SD UHS-II
Resolution
25.7 MP vs 9.4 MP — higher is better
Eye AF
Only K-3 Mark III supports it
Animal / bird AF
Only K-3 Mark III supports it
RAW buffer depth
120 frames vs 60 frames — higher is better
Codecs
Adds H.265
Both cameras share
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 60 fps
- ✓Battery life (CIPA) — Both 640 shots
- ✓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 Pocket 3
Pros
- ✓Built-in 3-axis gimbal
- ✓1-inch sensor
- ✓Creator-friendly
Cons
- –Fixed lens
- –Small sensor vs ILC
- –Accessory dependent
K-3 Mark III
Pros
- ✓Optical viewfinder
- ✓Weather sealed
- ✓IBIS in DSLR
Cons
- –DSLR system declining
- –APS-C
- –Limited video
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Osmo Pocket 3 or K-3 Mark III?
K-3 Mark III scores 10.0/10 versus 3.0/10 for Osmo Pocket 3 — 20fps burst captures fleeting moments.
What's the resolution difference between the Osmo Pocket 3 and K-3 Mark III?
Osmo Pocket 3 is 9.4 MP and K-3 Mark III is 25.7 MP, so the K-3 Mark III captures more detail for cropping and large prints.
Do the Osmo Pocket 3 and K-3 Mark III have in-body image stabilization?
Osmo Pocket 3 does not have IBIS, while k-3 Mark III has 7-stop in-body image stabilization.
Which shoots faster bursts — the Osmo Pocket 3 or the K-3 Mark III?
Osmo Pocket 3 reaches 15 fps electronic. K-3 Mark III reaches 20 fps electronic.
What's the weight difference between the Osmo Pocket 3 and K-3 Mark III?
Osmo Pocket 3 weighs 179 g and K-3 Mark III weighs 520 g, so the Osmo Pocket 3 is 341 g lighter.
Do the Osmo Pocket 3 and K-3 Mark III record 4K video?
Osmo Pocket 3: 4K up to 60p. K-3 Mark III: 4K up to 60p.
Are the Osmo Pocket 3 and K-3 Mark III weather sealed?
Osmo Pocket 3: No. K-3 Mark III: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the Osmo Pocket 3 and 640 shots for the K-3 Mark III, giving the K-3 Mark III the edge.
How much does each cost?
Osmo Pocket 3 launched at $519 and K-3 Mark III at $1,999. The Osmo Pocket 3 is $1,480 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.