Lenses are always identified by their focal length. It’s not just a physical measurement, it’s an indication of the type of lens it is, for example, a wideangle lens, standard lens, telephoto and so on. In other words, the focal length of the lens gives you an indication of its angle of view. Or at […]
A lens which gives a field of view roughly equivalent to human vision. On a 35mm or full frame camera, a 50mm lens is considered a 'standard' lens. Most people use zoom lenses instead, so you'd call this a 'standard zoom' or a 'kit zoom' instead.
The advantage of interchangeable lens cameras like DSLRs and mirrorless cameras is that you can change lenses for different kinds of photography. There are many different types of lenses, often with specific names. Lenses are usually characterised or grouped by their focal length. It might be more useful to use their angle of view instead, […]