On Tue, 4 May 2004 15:29:11 -0500 Bob Smith wrote: >On May 4, 2004, at 6:58 AM, David Hoffman wrote: > >> I think, as you suspected, you need a circular polariser. > >I use a 14n for critical copy work with cross polarized light. A >standard polarizer works just fine. In my situation...filters on the >lights as well... circular polarizers cause all sorts of weird color >shifts as you rotate the filter. The magenta/green cast Chris is >seeing is a problem with the lens optimization setting, not the >polarizing filter.
Maybe the reason I was told I had to use a circular pola was for the auto focus & not for colour reasons then? But your workflow involves the camera (linear) pola only seeing already (linear) polarised light - would that not be different from a camera linear pola seeing unpolarised light? David Hoffman -- __________________________________________________________ David Hoffman Photo Library <http://www.hoffmanphotos.com> phone +44 (0)20 8981 5041 fax +44 (0)20 8980 2041 =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
