Ellipsoidal, Focal or Projection Spot Light
A special-purpose light that projects a well-defined, easy to shape Beam; often used to project patterns onto backgrounds. A theater staple.
ENG
Electronic News Gathering as distinguished from EFP.
Gans88a extended the calculations of Mies to ellipsoidal particles, and showed that ellipsoidal particles should give a peak near 400 nm and a second peak at a longer wavelength.
If they are all flattened ellipsoids (vertical ovals about twice as tall as they are wide) then that tells you that the image was shot with an anamorphic lens. You'll see this in cinemascope motion pictures, not in still photographs.
In Your Lens ...
Thus, to a third-order transverse (geometric) aberration, or to a fourth order wavefront aberration, for zero coma and flat astigmatic field K=1 (oblate ellipsoid) and σ=0.5.
[edit] Image quality ...
3457 From North Ellipsoidal distance S = 15338.9277 m Delta height dh = 3176.0000 m Mark-to-mark distance D = 15670.8601 m DX = -15077.6541 m DN = -7684.2298 m DY = -10.8254 m DE = -13287.5272 m DZ = -4270.8414 m DU = 3157.
 See also: Shape, Image, Flat, Stop, Available
  
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