Question

what is focal length ? ​

Answer 1

Answer:

the focal length is the distance from the optical center of the lens to the imaging sensor when the lens if focused at infinity. The focal length is measured in millimeters. Focal length directly affects the size of the image captured, as it changes the angle of view. Wider angle view and greater area are captured when the focal length is shorter.

Answer 2

Explanation:

☑️ Length :

The distance between the centre of a lens or curved mirror and its focus.

Usually represented in millimeters (mm), is the basic description of a photographic lens.The longer the focal length, the narrower the angle of view and the higher the magnification. The shorter the focal length, the wider the angle of view and the lower the magnification.

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