Archived posting to the Leica Users Group, 2007/03/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jerry, That was my instructions. I should have said tilt the filter rather then rotate. Len On Mar 18, 2007, at 10:56 PM, Jerry Lehrer wrote: > Frank, > > I did it exactly as you suggested. Read your own words. > > "If you take an IR/UV filter in your hand. Look through it > straight on. The color > > through the filter is quite normal. Then slowly rotate the filter > so you are looking through it at an angle. The color through the > filter will turn cyan. The sharper the angle, the more cyan." > > Jerry > > > > Frank Filippone wrote: >> Jerry... on what lens? Or was this an eyeball-only test? >> >> Frank Filippone >> red735i@earthlink.net Len, >> >> I have just finished trying that with eight filters and only >> observed that effect with one filter, an E60 Leica filter. >> >> Jerry >> >> >> Leonard Taupier wrote: >> >>> Frank, >>> >>> It has nothing to do with film or the brand of filter. The >>> problem is the color response of the filter at extreme angles. If >>> you take an IR/UV filter in your hand. Look through it straight >>> on. The color through the filter is quite normal. Then slowly >>> rotate the filter so you are looking through it at an angle. The >>> color through the filter will turn cyan. The sharper the angle, >>> the more cyan. >>> >>> Len >>> >>> >> >> >> >> >> _______________________________________________ >> >> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information