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Are Luminosity and Twilight Factor relevant when describing a binocular? (1 Viewer)
- Thread starter Ted Y.
- Start date
Hermann
Well-known member
Merlitz, Holger (²2019):Handferngläser. Funktion, Leistung, Auswahl. Europa-Lehrmittel, Haan-Gruiten, p. 138-139, p. 141-144.
For a different (and much older) perspective cf. König, Albert & Horst Köhler (³1959): Die Fernrohre und Entfernungsmesser. Springer Verlag, Berlin, Heidelberg, p. 100-106.
In short: The "Dämmerungszahl" tells you something about how a binocular may perform at low light levels, but not a lot: Binoculars - Wikipedia. That's a pretty good summary.
Hermann
For a different (and much older) perspective cf. König, Albert & Horst Köhler (³1959): Die Fernrohre und Entfernungsmesser. Springer Verlag, Berlin, Heidelberg, p. 100-106.
In short: The "Dämmerungszahl" tells you something about how a binocular may perform at low light levels, but not a lot: Binoculars - Wikipedia. That's a pretty good summary.
Hermann
