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Long distance photography

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Long distance photography is a type of digital photography that covers the object to be seen through the atmosphere at extreme distances. This type of photography determines the great distance at which the given object can be seen under clear skies against the background sky.[1] The theoretical maximum range of about 330 km is defined by Rayleigh scattering conditions.[2][page needed] The practical maximum range depends on several factors:[1]

  • line of sight geometry
  • refraction
  • scattering and absorption the light in the atmosphere
  • sensitivity of the human eye

Types[edit]

  • Ground-based – whose primary criterion is capturing the view between two objects on the ground or firmly related to the ground. Within this group, we can distinguish also the so-called Long distance observations, featuring restricted criteria like the mandatory presence of an observer exactly in the place in which the given view is obtained.
  • Aerial – covering the objects captured from the most extremal distance in the atmosphere regardless of the placement of the camera

The most extreme distances captured[edit]

  • Mt Blanc captured from above Toulouse before sunrise in 2017 – the most extremal distance ever captured – 538 km [3]
  • Mt Blanc saw above Cologne in Germany at an altitude of 4000 m above ground level. Observation reported in 1948 – circa 530 km [1]


Dauphine Alps seen from above Toulouse at a distance of 445 – 454 km – blue mark indicates the Barre de Ecrins, which is the highest peak in this range.

References[edit]

  1. 1.0 1.1 1.2 Vollmer, Michael (2020). "Below the horizon—the physics of extreme visual ranges". Applied Optics. Optica Publishing Group. 59 (21): F11–F19. Bibcode:2020ApOpt..59F..11V. doi:10.1364/ao.390654. PMID 32749274 Check |pmid= value (help). Unknown parameter |s2cid= ignored (help)
  2. Bohren, C. F.; Clothiaux, E. E. (2006). Fundamentals of Atmospheric Radiation. Wiley. ISBN 978-3-527-40503-9. Search this book on
  3. "538 KM | Bourdeaux, FLIGHT – Mont Blanc". July 11, 2018.

External links[edit]

What is the maximum range I can get?



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