According to an article I read, the filter closest to the body must be circular polarized and the outside one closest to the subject must be linear polarized. Rotate the linear filter to vary the amount of light.... If you get blue results, use a Heliopan 486 or equivalent IR filter in front of all those filters..... Frank Filippone Red735i@xxxxxxxxxxx I have a thin B+W and a nice Heliopan I could put together and see what happens. Aram ------ Unsubscribe or change to/from Digest Mode at: http://www.lrflex.furnfeather.net/ Archives are at: //www.freelists.org/archives/leicareflex/