Focal length - Wikipedia
For a thin lens in air, the focal length is the distance from the center of the lens to the principal foci (or focal points) of the lens. For a converging lens (for example a convex lens), the focal length is positive and is the distance at which a beam of collimated light will be focused to a single spot.
What Is Focal Length in Photography? A Beginner’s Guide
2023年9月18日 · Without getting into an in-depth physics discussion, the focal length of a lens is an optical property of the lens. The exact definition is: Focal length measures the distance, in millimeters, between the “nodal point” of the lens and the camera’s sensor.
What is Focal Length and Angle of View in Photography
What Does the Focal Length of a Lens Mean? How focal length works is by describing each lens in terms of millimeters (lens mm). This description is a hard-physical reality of the lens in question, no matter the brand, format, or aperture.
Understanding Focal Length and Field of View | Edmund Optics
The focal length of a lens defines the AFOV. For a given sensor size, the shorter the focal length, the wider the AFOV. Additionally, the shorter the focal length of the lens, the shorter the distance needed to obtain the same FOV compared to a longer focal length lens.
Understanding Focal Length - Nikon USA
Focal length controls the angle of view and magnification of a photograph. Learn when to use Nikon zoom and prime lenses to best capture your subject.
What is lens focal length in photography? - Adobe
Explore what is & how to use lens focal length (the optical distance from the point where the light meets inside the lens to the camera's sensor) with Adobe.
Basic Photography 101: Understanding Focal Length in Camera Lenses
2021年9月3日 · Focal length is the distance (measured in millimeters) between the point of convergence of your lens and the sensor or film recording the image. The focal length of your film or digital camera lens dictates how much of the scene your camera will be able to capture.
What Is the Best Focal Length? A Comprehensive Guide
Discover the perfect focal length for your photography style. We share the best focal lengths for landscapes, portraits, and more!
Focal Length: Everything You Need to Know - FUJIFILM X
Focal length is the distance in millimeters between this point of convergence and the sensor or photographic film of the camera it is attached to. As you can see from Figure 1, a shorter focal length creates a wider angle of view, which means the subject appears smaller in …
What is focal length in photography? A guide for beginners - Nikon
2024年2月2日 · The focal length of a lens is the optical distance from the point where the light meets inside the lens to the camera’s sensor. What difference does this make? Read our handy guide to be in the know