Optical zoom should not be confused with digital zoom.. Larger sensors or films have wider FOVs and can capture more of the scene. 35mm Equivalent Focal Length Focal lengths of digital cameras with sensor smaller than the surface of 35mm film can be converted to their 35mm equivalent using the focal length multiplier. The FOV associated with focal length of lens is defined as the distance in mm from the optical center of the lens to the focal point, which is located on the sensor or film if the subject at infinity is in focus.

Some digital cameras suffer from barrel distortion at the tele end of their zoom ranges. This means that the size of subject projected on the film or sensor.

Wide angle lenses short focal length capture more because they have wider picture angle, while tele lenses long focal length have narrower picture angle. Below are some typical focal lengths Typical focal lengths and their 35mm format designations < 20mm Super Wide Angle 24mm 35mm Wide Angle 50mm Normal Lens 80mm 300mm Tele > 300mm Super Tele change in focal length allows you to come closer to the subject or to move away from it and has therefore an indirect effect on perspective.

Optical Zoom times zoom and Digital Zoom Optical zoom maximum focal lenght minimum focal length For instance, the optical zoom of 28280mm zoom lens is 280mm28mm or The focal length of 50mm are called normal because they work without reduction or magnification and create images the way we see the scene with our naked eyes same picture angle of 46.

Below are some typical focal lengths Typical focal lengths and their 35mm format designations < 20mm Super Wide Angle 24mm 35mm Wide Angle 50mm Normal Lens 80mm 300mm Tele > 300mm Super Tele change in focal length allows you to come closer to the subject or to move away from it and has therefore an indirect effect on perspective. Optical zoom should not be confused with digital zoom..

Optical Zoom times zoom and Digital Zoom Optical zoom maximum focal lenght minimum focal length For instance, the optical zoom of 28280mm zoom lens is 280mm28mm or Some digital cameras suffer from barrel distortion at the tele end of their zoom ranges. Wide angle lenses short focal length capture more because they have wider picture angle, while tele lenses long focal length have narrower picture angle.