What is the main feature of a telephoto lens?

The main feature of a telephoto lens is its narrow field of view combined with the ability to produce a magnified image. Telephoto lenses are designed to have long focal lengths, which means they can capture subjects at a greater distance while making them appear closer in the frame. This characteristic is particularly useful in photography situations where getting physically close to the subject is not feasible, such as wildlife photography or sports events.

The narrow field of view allows for a compressed perspective, which can isolate the subject from the background and foreground, creating a pleasing bokeh effect. This makes telephoto lenses ideal for portraiture as well, where the emphasis is often placed on the subject while minimizing distractions from the surrounding environment. The magnification aspect enhances details, making images appear more dynamic and engaging.

In contrast, options referencing short focal lengths or wide fields of view pertain to other types of lenses, such as wide-angle lenses, which provide a broader perspective and are suited for capturing expansive landscapes or crowded scenes. The option regarding the ability to capture macros specifically refers to macro lenses, which are designed for photographing small subjects at close range, thus distinguishing them from telephoto lenses.