DJI Ronin 4D Ronin 4D Review

The Ronin 4D delivers jaw-dropping video quality (88th percentile) and buttery 4-axis stabilization, but our data is screaming: with a user sentiment score in the 2nd percentile, this camera has a serious battery safety problem. Multiple buyers report swollen, dangerous batteries right out of the box. Until DJI gets a handle on that, even the best footage isn"t worth the gamble.

The DJI Ronin 4D lands in the 88th percentile for video quality in our database, putting it among the absolute best cinema cameras we"ve tested. That 6K ProRes footage looks stunning, and the integrated 4-axis gimbal gives you handheld shots that feel like they"re on rails. But all that technical goodness is completely undercut by a user sentiment score that"s a rock-bottom 2nd percentile—meaning nearly every other camera we track gets better feedback from actual owners. The culprit? A frightening number of reports about swollen, potentially dangerous batteries arriving right out of the box.

At a price that swings wildly from $4,999 to $8,658 depending on the vendor, you"re making a big bet on a tool that could arrive with a safety hazard. The 24.1MP full-frame sensor itself is middle-of-the-pack (45th percentile), autofocus is weak (34th percentile), and there"s no weather sealing. But if you can stomach those trade-offs—and the very real chance of a DOA battery—the Ronin 4D does one thing almost no other camera can: serve up buttery-smooth, high-end video in a single, grab-and-go rig.

Video is where this thing shines. You get full-sensor 6K up to 60fps in Apple ProRes 422 HQ, 4K at 120fps, and 10-bit Log recording that gives you plenty of room to grade. The 4-axis stabilization is the party trick, adding a dedicated Z-axis to iron out footsteps and minor bumps. It"s not just marketing—our stabilization score sits at the 72nd percentile, well above average, and the real-world results speak for themselves. The onboard 5.5-inch display is bright at 1,000 cd/m² and sits at the 84th percentile, making it usable outdoors, while the carbon fiber and magnesium alloy build feels every bit as premium as its 84th percentile ranking suggests.

But the numbers also point to some real gaps. Autofocus is a weak spot (34th percentile) despite the LiDAR rangefinder module, struggling in low light or with fast-moving subjects. The EVF is similarly underwhelming at the 36th percentile, and burst shooting is essentially an afterthought at 29th percentile—this is not a stills camera. Combine that with reports of rolling shutter jello effects (it"s a CMOS sensor, so that"s baked in) and no downsampling from 6K for a cleaner 4K image, and you start to see where the polish wears off. The LiDAR focus system is clever, but it doesn"t rescue the overall AF experience from feeling a generation behind dedicated mirrorless hybrids.

At its best, you can find the Ronin 4D for $4,999, which feels like a solid deal for a 6K ProRes camera with a built-in gimbal. But the same kit can climb past $8,600 at other vendors, and that $3,659 spread is wild. We"d only consider the low end of that range, and even then you have to factor in the gamble on battery safety. For the price of a gently used cinema camera and a separate gimbal, you could build a more reliable setup with far better autofocus. When the basic expectation of "it should arrive in one piece and not be a fire hazard" isn"t met, any talk of value goes out the window.

The Ronin 4D"s real competition isn"t other cinema cameras—it"s high-end mirrorless hybrids like the Sony Alpha a1 II and the Panasonic LUMIX S5IIX. The a1 II crushes it for autofocus and stills, and the S5IIX delivers fantastic 6K video with class-leading stabilization for a fraction of the price. The Nikon Z9 and Canon EOS R6 Mark III also offer robust video and reliable batteries that won"t swell on day one. What none of those have is an integrated 4-axis gimbal. So if you absolutely need a one-box solution for fluid handheld shots and are willing to roll the dice on quality control, the Ronin 4D is in a class of one. But for everyone else, those mirrorless options offer better autofocus, safer batteries, and a much more versatile platform without sacrificing image quality.

If you value reliability and safety over unique camera tricks, look elsewhere. The autofocus ranks in just the 34th percentile, so sports or event shooters will be miserable. The EVF is disappointing, battery life is average, and there"s no weather sealing to protect your investment. But the biggest red flag is user sentiment: at the 2nd percentile, it"s one of the worst we"ve ever tracked, fueled by dangerous battery defects. Unless you have a backup body and don"t mind potential returns, this isn"t the camera to trust on a paid gig.

The DJI Ronin 4D is a frustrating masterpiece. On paper and in the right hands, it produces some of the smoothest, most detailed 6K footage you can get without a full camera crew. But our database shows a user sentiment score that"s essentially dead last in its category, driven by multiple verified reports of swollen, dangerous batteries. That"s not a minor firmware quirk—that"s a fundamental safety problem. We can"t recommend a camera that might arrive as a literal hazard, no matter how beautiful its video looks. If you do take the plunge, inspect the battery immediately, update to the latest firmware, and keep a fire extinguisher nearby. It pains us to say it, but for most creators, the risk far outweighs the reward.