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Focal length is a measure of how strongly an optical system converges or diverges light. Learn how to determine the focal length of a thin lens, a thick lens, or a system of lenses and mirrors, and the difference between effective focal length and other related concepts.
18 Σεπ 2023 · Learn what focal length is, how it affects the field of view and the size of subjects in your photos, and how to choose the right focal length for your style of photography. See diagrams, photos and explanations of different focal lengths and crop factors.
13 Μαΐ 2023 · Learn how focal length affects the angle of view and the effective focal length of your camera. See diagrams and examples of different focal lengths and how they change on different sensor sizes.
Focal length is the optical distance from the lens to the sensor or film at the focal plane. Learn how focal length affects the angle of view and magnification of a lens, and the advantages of prime and zoom lenses.
Learn what focal length is and how it affects your angle of view, depth of field and subject size. Find out how to choose the best focal length for different types of photography and how to calculate equivalent focal length for different camera sensors.
Learn what focal length is, how to calculate it, and how to use it for different types of photography. Find out the benefits of prime and zoom lenses, and explore the cheat sheet of focal lengths for various scenarios.
Learn what focal length is in photography and how it affects the angle of view, perspective, and composition of your images. Find out the difference between focal length and depth of field, and see a focal length comparison chart for different lenses.
