What type of lens do I use for street photography?
A lot of photographers swear by a prime lens. This is a lens with a fixed focal length, which has a lot of advantages. First of all, these lenses have a large maximum aperture. This means you can still take good photos in low light and you can create a small depth of field. Prime lenses are compact and lightweight, so you won't attract as much attention as a street photographer. You also have more freedom of movement. A 50mm prime lens is a good choice for street photography.
All-round zoom lens
As described above, a 50mm focal length is deal for street photography. With it, you can take beautiful portraits of people on the street. But if you also want to explore other types of photography, use an all-round zoom lens such as a 24-70mm lens. This allows you to take wide-angle as well as portrait photos. Most advanced all-round zoom lenses have a large maximum aperture, which makes for beautiful portraits. Keep in mind that zoom lenses are usually a bit heavier.
It depends entirely on your style as a street photographer, but a wide-angle lens is great for street photography. If you have an APS-C image sensor, choose a focal length of 24mm or smaller. A 16mm lens gives you a very wide image angle. It allows you to capture a complete urban setting in one photo. With wide-angle lenses, you can choose a zoom lens or a prime lens. Have a big budget? Choose a versatile, lightweight wide-angle lens with zoom.