The mediocre battery performance of the latest Sony mirrorless cameras is ubiquitous and still an Achilles heel of those otherwise excellent filmmaking tools. The genuine Sony NP-FW50 Lithium-Ion battery should keep your camera running for an hour at most when shooting 4K video, and that’s a stretch. It’s not a surprise that filmmakers are constantly looking for alternative power solutions to resolve this annoying issue.
It seems that Emm from Cheesycam has already found a quick workaround, particularly when shooting on a gimbal. Since your Sony A7S II or A7R II can now be powered through its USB port, you can utilise this as an alternative power option, especially if you plan to mount your camera on a 3-axis stabiliser such as the DJI-Ronin M.
By using a dirt cheap D-Tap to USB adapter you can take advantage of the D-Tap out on the DJI Ronin gimbals to power up or even recharge your mirrorless camera.
The best part is that, the D-Tap to USB adapter splits to both a USB and D-TAP so you won’t lose the D-TAP connection if you’re still planning to power up another accessory like a wireless follow focus system, for instance. You will also need a regular Mini USB to USB cable to complete the setup. Once you get everything in place, you will be able to shoot for more than a couple of hours flawlessly.
You can find this amazing Rolux adapter for less than $15 online. Alternatively, you can use the following link.
Keep in mind, though, you can’t use the USB to power the older Sony cameras. Fortunately, it should work seamlessly on the A7sII and A7RII to both charge and power those cameras. Just make sure that you have a couple of extra fully charged Ronin batteries to be able to keep your favourite Sony mirrorless camera running for a full shooting day.