How to take a good portrait with Nikon D90 lens 18- 105mm?

Nikon's 18- 105mm lens is the most commonly used lens for APS frame fuselage, and the equivalent focal length of the corresponding 35mm full-frame camera is 29~ 168mm, which is suitable for shooting close-ups or details of people from landscapes to portraits.

When it is used to shoot portraits on the D90 fuselage, because the D90 is an APS frame machine, its corresponding portrait shooting focal length is mainly 50 ~105 mm.

Because according to the size of the camera imaging frame, the most suitable focal length for shooting portraits will be different. To judge whether a lens is suitable for taking portraits, the principle is that the perspective deformation produced by the lens in this focal length section best meets the requirements of people for the five senses when observing the close-up of people, and there will be no problems such as nose and forehead being too prominent or exaggerated. At the same time, in this focal length section, the portrait can occupy the whole picture when the person is close-up, but it is not called portrait lens because some telephoto lenses are used. In order to make the picture full of the subject, it needs to be too far away from the subject, which will cause the subject to have a bad psychological reaction of "people thousands of miles away", so it is generally believed that the portrait lens is in focus in the middle.

In Quan Huafu 35mm camera, the focal length of portrait is 70~ 135mm. According to this calculation method, the APS frame corresponding to D90 is 50~85mm, so it should be used within the focal length of this lens as much as possible. A lens with a focal length greater than 85mm has a small perspective deformation, but in use, care should be taken not to let the photographer be too far away from the subject, so as to avoid being too far away to hear in communication, influencing others by shouting loudly, or making the subject feel uncomfortable.