The VIOFO A229 Pro and VIOFO A139 Pro carry the same image sensor, the Sony STARVIS 2 IMX678, which records in 4K UHD @ 30 frames per second, with a 140-degree field of view. Looking at their footage, we must say that both these dash cams show great performance in daytime conditions.
Now, the differences start to show, particularly for their secondary cameras. The A139 Pro sports a 2MP Sony STARVIS IMX291 sensor for its rear camera, which records 1080P @ 30 fps. Meanwhile, the more advanced VIOFO A229 Pro is equipped with a 5MP Sony STARVIS 2 IMX675 sensor for its rear camera — similar to the VIOFO A119 Mini 2’s sensor. This means that the rear camera of the A229 Pro captures clearer, crisper 2K QHD footage.
For the interior cameras, the A139 Pro also has the same sensor as its rear camera, a 2MP IMX291. Again, the A229 Pro records better footage with its upgraded 2MP Sony STARVIS IMX307, which includes an IR Cut Filter. The IR Cut Filter shifts filters automatically depending on light sensor data, screening out infrared rays in sufficient light to restore true colour and significantly reduce red or purple hue.
Night Vision, however, is where the A229 Pro takes the lead. While both the A229 Pro and A139 Pro have HDR, it’s the A229 Pro that has High Dynamic Range(HDR) for all three of its cameras. Not to mention, an upgraded Super Night Vision 2.0 for all of them too! Due to these features, the A229 Pro is showing better footage for night drives, specifically with better visibility in dimly lit areas, especially with the HDR and Super Night Vision supported 2k rear camera.
Another thing we noticed is that when the A139 Pro operates in 1, and 2-Channel configuration, the front camera records at 4K at 30fps. However, when used in a 3-channel configuration, the front image quality will record 2160p at 24fps, as opposed to the 30fps above. The VIOFO A229 Pro’s frame rates remain the same, even if all cameras are working.
Still, both dash cams are compatible with a CPL Filter that comes standard in both packages. Reducing glares and reflections, they are also compatible with the BlackboxMyCar Aqua Shield for protection from dust, rain and other environmental factors.