Excuse me, why is it more appropriate to take portraits with a lens of 85- 135 mm?

Because in daily life, the true facial proportion is not the same as what we usually see with the naked eye. When we chat with a person and look at his face, our focus is very focused. At this time, the eyes are at a small angle of about 20, and attention is highly focused on the eyes, nose and mouth closely related to obtaining information. Therefore, we seldom consider other head edge areas. In this case, we see each other's faces narrower than they really are.

Using a lens with a focal length of 85 ~ 135 mm in Quan Huafu mode, the imaging effect is very similar to the human visual effect described above. This lens focal length can make the head look slender and narrow in a face portrait or bust, which is very suitable for standard portrait photography.

On the contrary, the head shot with a short focal length lens will appear biased, thus losing its aesthetic feeling. This includes lenses with a focal length of 50-70 mm. If a wide-angle lens with a focal length of less than 35mm is used, the face under the lens will be severely distorted locally and the aesthetic feeling will be completely lost. The nose close to the camera will look big, while the ears a few centimeters away will look small. This imaging effect should only be used in exaggerated comic photography-of course, this must be approved by your model in advance.