fókusztávolságok

Fókusztávolságok refers to the focal lengths of lenses, a crucial concept in optics and photography. Focal length is the distance from the optical center of a lens to the sensor or film plane when the lens is focused at infinity. It is typically measured in millimeters.

Different focal lengths produce different angles of view and magnifications. Short focal length lenses, often called wide-angle lenses, have a broad field of view, capturing more of the scene. This makes them suitable for landscapes and architectural photography. Conversely, long focal length lenses, known as telephoto lenses, have a narrow field of view and magnify distant subjects, making them ideal for wildlife and sports photography.

A standard focal length, often considered to be around 50mm on a full-frame camera, approximates the field of view of the human eye. Lenses with focal lengths shorter than this are considered wide-angle, and those with longer focal lengths are telephoto. Zoom lenses offer a range of focal lengths, allowing photographers to adjust their perspective without changing lenses. The choice of focal length significantly impacts the composition and aesthetic of an image, influencing depth of field and the perception of space. Understanding focal lengths is fundamental for anyone working with cameras or optical instruments.