fókusztávok

Fókusztávok is a Hungarian term that translates to focal length in English. It is a fundamental concept in optics and photography, referring to the distance between the optical center of a lens and its focal point. The focal point is the point where parallel rays of light converge after passing through the lens.

In photography, the focal length of a lens determines the angle of view and the magnification of the image. Lenses with shorter focal lengths have a wider angle of view, capturing more of the scene, and are often referred to as wide-angle lenses. They are useful for landscapes and architectural photography. Conversely, lenses with longer focal lengths have a narrower angle of view and magnify the subject, making them suitable for telephoto shots of distant objects or portraits.

The focal length is typically measured in millimeters. A standard lens, often considered to have a focal length close to that of the human eye, is around 50mm on a 35mm film format or full-frame digital sensor. Lenses with focal lengths significantly shorter than 50mm are considered wide-angle, while those with significantly longer focal lengths are telephoto lenses. Zoom lenses offer a range of focal lengths, allowing photographers to adjust their angle of view and magnification without changing lenses. The choice of fókusztávok is crucial for achieving the desired composition and perspective in an image.