Sound Record

Sound Record can record more information on accident, but in daily life, it will record some intimate things, so this function has two sides,

A lot of dash cam can be turned off the sound record, of course, according to your needs, set to protect our privacy.

High resolution

Now, a lot of dash cams are beginning to popularize HD image. At present, entry-level models also are equipped with 1280*720, but the mainstream models are equipped with 1080p.

However, we should distinguish the image quality and the high resolution. Sometimes the 1080p machine is poor than 720p. because these machines expend the resolution by some algorithm, isn’t a true resolution.

Night vision

In order to record clear video, most of the dash cam with night vision. the night vision effect not only is increased by the hardware but also the after- process can improve the clarity through the exposure or adjusting brightness.

Of course, driving in daytime must need the night vision, because the light will change in or out the tunnel, the night vision effect bring more outstanding effect.

Lens

At present, many manufacturers are boasting that the lenses of their home products have a high-definition coating or special processing technology to improve the overall picture quality of the recorder. the lens of the current dash cam will not cause a bottleneck to the overall performance of the dash cam. When we look at lens parameters, we need to focus on whether these parameters can meet our needs, as long as this is enough.

Aperture

Most people know that the aperture of the lens controls the lighting, improving the image quality in low light. At present, the main aperture is F2.8, some are F2.0 or more, combining with night vision, it can apply to all kind of low light,

However, the large aperture is more blurred. In order words, only the focus is clear, anther is blurred. So when in the purchase of the dash cam, don’t choose the small aperture. 

rear view dash cam:http://bit.ly/2F6B5Ep