I want to use some ND Grad filters with my EOS 350D kit lens, unfortunately as it is a rubbish lens (and I can't affoard to by a new one) the lens barrel rotates during focusing. Does anyone know where I can get something to screw onto the filter thread that will allow the filters to rotate independently of the lens barrel? I have seen one before it is basically two slip rings like the ones in a circular polariser but with no glass in them.
Thanks
Thanks