Eberhard effect

In photographic science, the Eberhard effect, named after Gustav Eberhard, is a special case of two Mackie lines when narrow areas of high and low densities (usually lines approaching within 1 mm. thickness) cause the two Mackie lines to meet which results in an increased density of this small area.[1]

Eberhard published his findings in 1912[2] or in 1926, 1931.[3]

The Eberhard effect belongs to the family of photographic edge effects.[4]

References

  1. ↑ Applied Photography, Arnold et all, Focal Press, page 64
  2. ↑ D A Spencer, The Focal Dictionary of Photographic Technologies, page 185
  3. ↑ The Focal Encyclopedia of Photography, Desk edition 1969, page 491
  4. ↑ D A Spencer, The Focal Dictionary of Photographic Technologies, page 186
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