Just a question. About 6 months ago I purchased a kenko CP filter, suposible hig quality. When I first tried it out I am certain tht when I rotated the front filter I could see the shade of the polariser effect - such as the sky colour soften etc.
Have not had the filter on the rig since until today and for the luv of me I cannot see any CP effect when rotating the filter, looking at the shots taken you can see that the polariser had dampened the harsh ligh but there is clearly no difference from rotating the front of the filter. I double checked to ensure the glass was actually rotating etc etc.
Do CP filters go off so to speak - such as a glass coating fails or such. I have to say I am a bit peeved as I paid around a $100 for this filter and have never really utilised it, now it appears to be useless.