sorry what is a CP-L filter means? i vy new to this..
i got the lens from a friend of mine ( it had a UV filter wif it)
inorder to fix the hood nicely i got to remove the filter if not it cant fully fit in ( can see the shadow of the hood)
You need to turn the CPL when you compose to see the best effect right before shooting. It will be a challenge to turn the CPL when you have a lens hood on over it.
Please watch that video I posted in your other thread. Try to understand what a CPL is meant to do.
It is not a filter you leave on all the time. You put it on as and when you need it.