Hi, Last October I travel to Perou at 3500~4000 meters(10000~12000ft) high from the sea level.
I used 6 different lenses, Nikkor, Minox, Leitz and Sygma, with and without regular UV filter Leitz and Hoya, and Skylight L1b2 Nikon, color negative film Fuji Reala 100ISO. In the same roll I have pictures made with different lenses, in the same place, with and without filter or different filters. The pictures I made without filter have a strong blue cast. The pictures I made with Nikon Skylight have almost no cast. The lens with a regular UV filter produced a light blue cast. The blue color looks very deep in all the pictures, a pale sky became a deep blue sky. The problem looks stronger in the horizon line and specially at a 3900 meters place. My wife was using a Canon A85, 50ISO, automatic WB. All the pictures have the blue objets looking too blue, the sky looks fake, really too blue. It�s just like I used to read about U.V. light and photography, but I lived all my life near the sea level, so it was not a concern to me till now. Best regards, Fernando > > This caused quite a debate a while ago. Take a look in the archive; > > http://www.mail-archive.com/[email protected]/ > msg16009.html > > > On 24 Nov 2004, at 17:29, Craig D. Blackmon, FAIA wrote: > > > I believe this is a GOOD PRACTICE to PROTECT the EXPENSIVE FRONT OF > > LENS... > > > >> Back in the old film days we used a sky light or uv filter to > >> suppress the > >> blue cast in the shadows. It also served the purpose of protecting > >> the lens > >> so I left it on all the time even with B&W. Is this still the > >> recommended > >> practice? > >> > >> Al Loeb > > Cheers > > George Brooks > > Folio http://www.georgebrooks.net > Print sales http://www.peeledeyeprintbox.com/georgebrooks/ > > Fernando Chaves www.fernandochaves.com tel (5511) 3062 9340 cel (5511) 9678 3586 fax (5511) 3085 1970 > > > This caused quite a debate a while ago. Take a look in the archive; > > http://www.mail-archive.com/[email protected]/ > msg16009.html > > > On 24 Nov 2004, at 17:29, Craig D. Blackmon, FAIA wrote: > > > I believe this is a GOOD PRACTICE to PROTECT the EXPENSIVE FRONT OF > > LENS... > > > >> Back in the old film days we used a sky light or uv filter to > >> suppress the > >> blue cast in the shadows. It also served the purpose of protecting > >> the lens > >> so I left it on all the time even with B&W. Is this still the > >> recommended > >> practice? > >> > >> Al Loeb > > Cheers > > George Brooks > > Folio http://www.georgebrooks.net > Print sales http://www.peeledeyeprintbox.com/georgebrooks/ > > Fernando Chaves www.fernandochaves.com tel (5511) 3062 9340 cel (5511) 9678 3586 fax (5511) 3085 1970 =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
