GoKawiilFrom the neck down, the Luna Pro is almost identical to the Ultra. The only visual difference is the wider frame along the top edge of the display with the word "Luna" printed in cursive. Above the collar, it's a different story, with a smaller, single-lens gimbal head that shaves about half an inch off the total height of the device. The Luna Pro also comes with the same pop-off front panel that doubles as a wireless remote and microphone.
Internally, the Pro matches the specs of the Luna Ultra's main 20mm camera. That means the same Leica Summicron lens (f1.8/20mm) paired with a 1-inch sensor that supports 8K/30 and 4K/120. Dolby Vision, 10-bit I-Log and 37-megapixel photos are all here, too. One notable difference in the Pro's favor (at the time of writing) is support for true 4K shooting in 9:16 mode (screen in portrait). The Luna Ultra, like the Pocket 4 and 4P, currently only offers 3K in portrait mode. So on the Pro, there's no more holding the camera horizontally for true 4K, social media-friendly videos.
The Luna Pro also has the same 47GB of internal storage, expandable via SD card and the same 1,550 mAh battery as the Ultra. The near identical dimensions of the body mean accessories should be largely compatible unless it's something that attaches to the gimbal head. For example, Insta360 provided a fill-light accessory for this review, which connects to the collar of the gimbal mechanism, so it's not compatible with the Luna Ultra. Fun fact, you can swap the detachable displays between models, and they will still work — even wirelessly — but the screen will update its firmware to match the new camera each time. When I tried this, I lost the 4K portrait menu option on the Pro, which meant I needed a factory reset to resolve the problem. It's something you can do, but probably shouldn't.