For street photography they usually recommend fixed focal lenses, generally 35mm, 50mm or even 85mm. All these are great lenses above all the 85mm, which is my favorite but I have always liked to wear lenses with different focal range Even with 300mm I feel very comfortable when taking photos on the street. With these I can reach places that does not allow me 50mm for example and almost always vary between street and architecture.

Have the possibility of capturing the details at the top of some buildings, that is simply wonderful.