I recently read an article where the author had used a 10 stopper, 2 stop nd grad and polariser filter for long exposure shots facing the evening sun. I have a 10 stopper and 2 stop nd grad but have never user a polariser with this config before. The set up procedure is enough to put you off, fixing circular polariser, fixing filter rack, composing then whist holding the polariser slotting in the square nd filters. Is the polariser really necessary as it is not near 90deg to the sun? Or was he just using it as another light stopper? His images were very impressive but what a faff!