This type of zoom lens is a type of lens that has a focal length range that can be adjusted as needed. This lens is most commonly used among photographers because of its versatility, so you can shoot anything from weddings, concerts, to wildlife in the forest.

Even though this lens doesn't have a wide aperture like a prime lens, you don't need to carry lots of fix lenses with various focal lengths. You only need to bring a zoom lens with a certain focal length. The focal length of this lens also varies from 17-40mm, 24-105mm, up to 70-200mm.

However, the drawback is in the lens which tends to be softer for focus. Especially for lenses that have a fairly long focal length range.