Wide Angle Lens
Allows you to fit more into the frame, making them perfect for capturing magnificent and stunning scenes such as expansive landscapes or cramped interiors.
Wide angle lenses tend to be 35mm or lower.
A smaller focal length gives you more space to frame large buildings and other large-scale shots that were difficult to capture before. Also, as you move further into the wide-angle territory, objects near the camera continue to appear larger, while objects in the distance appear extremely small, thus enhancing the perspective of the image. Perspective is what gives flat pictures a spatial (three-dimensional) quality.
Improved Depth of Field
Wide angle lenses exhibit more depth-of-field at a given aperture than telephoto lenses.
Greater Context For Portraits
Capture a subject in relation to the environment that is most indicative of the story you want to convey.