Hi Jostein,
To see the motif in the viewfinder just pop out as I turned the polariser was an amazing experience.Large version: 1000x668 pixels, 315 Kb http://www.oksne.net/paw/sprekk1000.html
very nice, one time I did some shooting through the window of the airplane and I've got similar rainbow effects. I still don't understand how it works, though...
Bedo.
