Assertion: camera lens's length | /r/HasProperty | the distance
Facets:
value: between the lens
type: LOCATION
value: from the focal plane
type: LOCATION
value: between the focal point
type: LOCATION
value: to the point
type: OTHER
value: between its focus
type: OTHER
value: on the optical axis
type: LOCATION
Source sentences:
text: Focal length is the distance between the center of the lens and the image sensor.
text: Focal length is the length or distance from the front of the lens to the sensor inside of the camera.
text: A camera lens’ focal length (the distance from the lens’ most focused image to the camera’s sensor itself) is written in millimeters.
text: The focal length of a lens is the distance from the centre of the lens to the point at which the image of a distant object is formed.
text: Focal length is the distance between the optical center of the lens, and the camera sensor or film plane when focused at infinity.
text: The focal length of a convex lens is the distance between the center of the lens and the focal point.
text: A focal length is the distance between the middle of a lens and its focus and is usually measured in millimeters.
text: Focal length is the distance from the lens’s rear nodal point to the image plane inside the camera body.
text: In the region of near-field diffraction (or Fresnel diffraction), the pinhole focuses the light slightly, and the resolution limit is minimized when the focal length f (the distance between the pinhole and the film plane) is given by f = s2/λ.
text: Unless you are dealing with a large format system and looking at the rail on your camera, you aren't going to care about how the lens is designed and if the actual focal length is the distance between the lens and the focal plane or not.
text: For the special case of a thin lens in air, a positive focal length is the distance over which initially collimated (parallel) rays are brought to a focus, or alternatively a negative focal length indicates how far in front of the lens a point source must be located to form a collimated beam.
text: 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.
text: For a diverging lens (for example a concave lens), the focal length is negative, and is the distance to the point from which a collimated beam appears to be diverging after passing through the lens.
text: Back focal length (BFL) or back focal distance (BFD) (s′ F′ ) is the distance from the vertex of the last optical surface of the system (S 2 ) to the rear focal point (F′).
text: The focal length (f), the distance from the front nodal point to the object to photograph (s 1 ), and the distance from the rear nodal point to the image plane (s 2 ) are then related by:
text: The focal length of a lens is the distance on the optical axis from the focal plane to the optical center of the lens when it's focused to infinity.
text: where d is pinhole diameter, f is focal length (distance from pinhole to image plane) and λ is the wavelength of light.