What focal length is suitable for shooting vlog?

The focal length of shooting vlog is between 28 mm equivalent and 52 mm equivalent ... but when shooting scenery at 28 focal length, I still feel a little motionless.

According to the research of ergonomics, the visual field of human eyes is a rectangle, and the aspect ratio is 16: 9, so TV and movies have begun to design products according to this golden ratio.

In fact, we will find that the horizontal perspective is more important than the vertical perspective when human eyes watch, and we tend to watch the horizontal landscape. The larger the horizontal plane, the closer it is to the real feeling seen by the naked eye. This morphing lens stretches the picture we usually shoot from 4: 3 to the movie size of 2.40: 1, which makes the horizontal viewing angle richer and more immersive.

In addition, when shooting, due to the stretching of the lens, it will also produce lateral glare, just like in the movie, which is psychedelic and wonderful. Just one shot is the texture of the film. Another advantage of this shot is that the later cutting details are very rich. Traditional photos need more side details if they are to be cut to 16: 9 or wider. ?