Why does the video on the iPhone blinks during shooting in Slo-Mo

Reader Question:

iPhone 

7 plus mode Slow-Motion removes low quality video and all flickering during shooting. 

Shooting in the usual good quality.

Our answer:

Many users of various smartphones and tablets are faced with a similar effect while shooting Slo-Mo video. Do not worry, it's not a bug, not a fault, namely, the effect of which is called "flicker".

This effect is explained by the peculiarities of the artificial light sources. Most lamps of different types and with different principles of operation are barely noticeable flicker. It is associated with the frequency of the current in the power supply or with a specific feature of the lamp design.

The human eye can not distinguish this flicker, but the camera that takes a large number of frames per second, it is easy to notice the flicker. It is in Slo-Mo mode is shown in all its glory this effect.

You can easily see this, simply remove the slow motion video without the use of artificial lighting (in the afternoon on the street). You will see that there is no flicker.

To get rid of the effect, use professional equipment for the shooting or special fixtures without such a flicker. The average user will be available to correct flicker by using special software. Most video editors are able to minimize or even eliminate the effect of flicker in the video.