DJI Osmo Action 5 Pro vs DJI Osmo Action 4

In short: The DJI Osmo Action 4 costs $70 less; the DJI Osmo Action 5 Pro goes 20 m deep with no housing against 18 m; the DJI Osmo Action 5 Pro claims 4 h at 1080p24 with RockSteady on.

SpecDJI Osmo Action 5 ProDJI Osmo Action 4
Approx. price~$299~$229
Year-one cost~$299~$229
TypeFlagship actionFlagship action
Sensor size1/1.3-inch1/1.3-inch
Sensor area72 mm²72 mm²
Max resolution4K @ 120fps4K @ 120fps
Reframed resolutionn/a — already flatn/a — already flat
Max fps at 4K120120
Max fps at 1080p240240
Max bitrate120 Mbps130 Mbps
Colour depth10-bit10-bit
Log profileD-Log MD-Log M
StabilisationRockSteady 3.0+RockSteady 3.0
Horizon lock360° (full)360° (full)
Aperturef/2.8f/2.8
Waterproof20 m bare, 60 m cased18 m bare, 60 m cased
Claimed runtime4 h at 1080p24 with RockSteady on2 h 40 min at 1080p24 with RockSteady on, Wi-Fi off
Tested runtime2 h 14 min (road.cc action camera group test)No third-party test collected
Battery1950 mAh1770 mAh
Cold rating-4°F-4°F
Weight146 g145 g
Screens1.46-inch front + 2.5-inch rear OLED touch1.4-inch front + 2.25-inch rear touch
MountMagnetic quick-releaseMagnetic quick-release
Replaceable lensesYesYes
GPSNoNo
Voice controlYesYes
StoragemicroSD + 47 GB internalmicroSD
SubscriptionNoneNone
Released20242023

A highlighted cell is the outright better figure in that row, and only where one direction is unambiguously better. Weight, field of view and battery capacity are left neutral because the better direction depends entirely on what you are shooting.

Strengths and drawbacks

DJI Osmo Action 5 Pro

  • +Double the sensor area of a Hero 13 for less money than one
  • +Beat the Ace Pro 2 by half an hour in a same-conditions drain test
  • +Internal storage means the camera still records when the card is in the other jacket
  • +Twice the bare waterproof depth of any GoPro Hero
  • +Rear OLED is the best screen on any action camera at this price
  • −Tops out at 4K — no 5.3K or 8K mode
  • −No GPS overlays
  • −Magnetic-only mount needs an adapter for GoPro-fingered accessories
  • −Real-world runtime is closer to two hours than the four DJI quotes at 1080p24
  • −Fixed f/2.8 aperture, so bright snow and water still need an ND filter the Action 6 does not

DJI Osmo Action 4

  • +Same 72 mm² sensor as DJI's current mid-range, for a hundred dollars less
  • +130 Mbps ceiling, slightly above the newer Action 5 Pro
  • +18 m bare waterproofing still beats every GoPro Hero
  • +Takes the same magnetic mounts and batteries as the Action 5 Pro
  • +Owners consistently rate the colour science as the most natural of the three major brands
  • −10 MP stills against 40 MP on the newer body — this is the real generational gap
  • −No internal storage
  • −Smaller 2.25-inch rear screen
  • −RockSteady 3.0 rather than 3.0+, a small step back on hard vibration
  • −No 1/4-20 thread, so tripod use means carrying the mount adapter