Side by side
DJI Osmo Action 4 vs SJCAM SJ30
DJI Osmo Action 4
201 positive (85%) · 21 mixed (9%) · 15 negative (6%)
Trust + time weighted: +79%
AI summary — not a quote
The DJI Osmo Action 4 is highly regarded as a top-tier value choice in the action camera market, particularly praised for its stabilization, magnetic mounting system, and rugged build quality. While it is now an older model compared to the Action 5 Pro, Reddit users frequently recommend it as the best budget-friendly alternative that still delivers professional-grade image quality and reliable performance for activities like cycling and travel.
Pros
- Excellent value for money, especially when found on sale or purchased used
- Strong 'Rocksteady' stabilization that performs well on bike trails and chest mounts
- Convenient magnetic mounting system for quick swapping between fixtures
- Durable and waterproof up to 20m without requiring an external case
Cons
- Mandatory app registration and phone number activation required to use the device
- Susceptible to overheating in extreme conditions, such as high-resolution recording in direct high heat
- Out-of-camera colors can occasionally appear overly saturated
- Low-light performance is considered mediocre by some users
Top excerpts
Action 4
dji Osmo Action 4
To take advantage of the sensor size, the other two haven’t done great deal of software refinement in terms of video quality compared with GoPro 13 (I have GoPro 13 Hero, DJI OSMO Action 5 Pro and Insta360 GO 3S).
You need to go for DJI OSMO Action 5 Pro or Ace Pro 2 both seem to have bigger sensors(1.3 inches I believe) for multipurpose use and good low light performance
I just unboxed my action 4 and thought the same, phone number for app registration to activate the device, super long tos..
SJCAM SJ30
16 positive (94%) · 1 mixed (6%) · 0 negative (0%)
Trust + time weighted: +94%
Top excerpts
SJCAM SJ30. It’s a bit of an underrated option if you’re mainly after photos but still want something capable for action/FPV later.
The stabilization is solid for walking and biking, the 4K footage looks good in daylight, and the long battery life is a big plus when you’re out all day. I also like the flip screen for quick selfies or family shots, plus the dual-lens setup gives it some flexibility for both regular and low-light footage.
The SJCAM SJ30 looks worth considering for this kind of use—2K/60fps, stabilization, and a waterproof setup should cover motorcycle trips and snorkeling without spending a ton.
I’d add the SJCAM SJ30 to the list if you’re considering something new in that price range. The dual-lens setup, 4K recording, stabilization, and flip screen make it pretty interesting for travel and cycling
I was looking at the same thing for MTB and ended up considering the SJCAM SJ30. Obviously you don’t get the whole “reframe everything later” thing like a 360 cam, but if you just want decent trail footage without spending ages editing every ride, it seems like a pretty practical option.