Archived posting to the Leica Users Group, 2001/11/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks, Peter. I think I'll try the 1A, but not the UV. We had UV filters on the non-Leica glass and got the same results with the same film. /Mitch Zeissler - -----Original Message----- From: Peter A. Klein [mailto:pklein@2alpha.net] Sent: Wednesday, November 14, 2001 9:08 PM To: leica-users@mejac.palo-alto.ca.us Subject: [Leica] High altitude question Dare I even say the words "Ultra Violet Filter...?" The blue cast is happening for the same reason you get sunburned at high altitude. Thinner air, more UV. The clear UV filter will filter out aerial haze and get rid of some of the blue. A skylight (1A) filter is a little pinkish, and will warm things up a bit more. If it were me, I'd use the 1A for shadow pictures, and the UV for shots with distant views. If you don't want to swap filters a lot, just use one or the other, and tweak the color balance in your image editor. - --Peter Klein Seattle, WA At 09:29 AM 11/14/2001 -0800, Mitch wrote: >While scanning photos taken in Colorado, at elevations between 9,000 and >13,000 feet, I observe that all the shots have a strong blue cast, but >that shots at less than 1,000 feet in elevation are normal. The film in >question is Portra 160NC. > >What are the experiences of others and how do you compensate for this >color shift at high elevation? Filters? Different film? - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html