![]() It captured the shape and colours of vehicles, but I struggled to make out many number plates from parked cars, even when aided by the reflection of my brake lights. Given the rear camera has a good quality STARVIS sensor, I was a little disappointed in its night time footage. Unusually, rear camera footage is stamped with the same speed and GPS coordinates as you’ll find on the front footage – in theory, this could make it more acceptable as evidence. Like the front camera, it dealt excellently with dappled sunlight and high-contrast scenes, although I found myself wishing it also came with a polarising filter. Rear-facing cameras usually aren’t as good as their front-facing master unit, but Viofo’s is much better than average, especially in the daytime. On sunny May days it really proved its worth. This camera comes with a push-on circular polarising filter, which helps remove cabin reflections in bright conditions. Similarly to the Road Angel Halo Pro bundle, I found it easy to make out number plates even when there was a reasonable speed differential. Front-facing video was excellent in all conditions, somehow appearing smoother than normal for 30 frames per second.įootage had an excellent dynamic range, capturing both the detail of expansive blue sky and harsh sunlight, and shadowed areas of the road. I tested this camera during late spring, in a mix of sunny and filthy weather. Image Credit (Trusted Reviews) Performance and video quality The rear camera covers a huge 165 degrees, capturing almost the full width of my car’s rear screen. The Viofo A139 Pro covers a 140° angle, which is enough to capture almost anything relevant as you pass by. Viofo doesn’t supply one, but the camera supports MicroSD cards up to 512GB. Fortunately, it’s easy to remove the memory card and do just that. You might find the app’s file view feature handy, but personally I prefer browsing through recordings from a computer. The live view helps you fine-tune both cameras’ aim in the absence of a screen, while you’ll want to use the comprehensive settings to turn off the incredibly harsh sounds upon startup and shutdown. This isn’t at all bad, providing a live view and letting you browse your recordings, but it does mean you’ll need a phone to configure the camera. The settings are only accessible via Viofo’s smartphone app. I managed to mount it upside down, but fortunately, you can invert and flip the picture in the settings. The rear camera is connected by a long, thin miniature coaxial cable. In this case it’s a dual-USB type, which helpfully leaves you with an extra USB power port. Viofo supplies the usual cigarette power adaptor. There are an unusually large number of buttons, indicator lights and connectors, but if you’re like me you’ll set the camera up once and never meddle with them again – unless you need to protect your recordings with the hazard button in the middle. Not only does this allow for any windscreen angle, Viofo even says you can twist it fully round for vlogging, if that’s your thing. ![]() The camera itself is carried in a circular sidepod that rotates through almost 300°. This isn’t the smallest or most attractive dash cam I’ve tested, but its main body is a fairly slim wedge shape. That makes it a lot easier to remove and reposition, but alas the rear camera just has the usual sticky pad. It comes with a large electrostatic sticker that fits to your windscreen, and the camera mount sticks to that. It’s worth stressing that this ‘Pro’ model is distinct from the standard Viofo A139, which has a lower 2K front resolution.įitting and removing dash cams can be a pain, but the A139 Pro is one of the better examples. ![]() ![]() The A139 Pro doesn’t have a screen, but it’s otherwise fairly well specified. For a little more than £200 you get a front and rear bundle that can film 2160p and 1080p respectively.īoth cameras use Sony STARVIS sensors, specifically developed for good low-light performance. GPS positioning, parking mode and a g-sensorĭash cams with 4K resolution are getting cheaper, and the Viofo A139 Pro proves the point.Easy to fit and remove, with rear camera support. ![]() The Viofo A139 Pro itself has a 4K Sony STARVIS 2 sensor, GPS positioning, built-in Wi-Fi and a parking mode, but it doesn’t offer advanced driver aids such as a lane change warning. You can’t buy a three-channel bundle (front, interior, rear), but you can create one by buying a two-channel bundle and getting the missing camera separately for a reasonable £55. I’m testing the rear-view bundle, which pairs the Pro with a Full HD rear camera. The Viofo A139 Pro is a screen-less dash cam, available bundled with either a rear-view or interior camera. ![]()
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