Archived posting to the Leica Users Group, 2001/02/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The sunny 16 rule has a sub-clause where if you are on white sand or snow it becomes sunny 22. John Collier > From: leica@rakitzis.com > >>> I'm off for some skiing at Banff (elevation 5000-8500ft).... In case >>> the meter goes belly up, does the sunny f16 rule change appreciably at these >>> altitudes? > >> In proportion how negligeble is 5000-8000ft as far as distance from the sun >> to earth is concerned? Think inverse square law... > >> andy > > This is the wrong analysis. The air is thinner up there, so there is > less atmospheric scattering and in my experience anyway it's brighter > at altitude. > > Maybe try sunny f/22? > > Byron.