I want to buy a Nikon D90 first, which is mainly used to shoot portraits, landscapes and occasionally concerts. I don't know what kind of lens to match.

Provide ideas for reference and decide which lens to choose:

1, portrait, lens aperture should be large (f value should be small. The same below) is to blur the background and highlight the subject. Nikon standard fixed-focus portrait lens is 85/ 1.4.

2, shooting scenery, the focal length of the lens should be short, in order to have a wide angle of view and enough composition. D90 is the focal length of 1.5 times, and it is best to choose a short focal length lens of14-18 mm.

3. There are two basic requirements for shooting a concert. First, the focal length should be long, at least about 200mm, in order to get a shot (especially for taking close-ups of actors); Second, the lens diameter should be large to adapt to the dim light of the concert (referring to the indoor concert), and shooting close-ups of actors is also conducive to blurring the background.