My thoughts in posting this note are two-fold ... my way of using the thing & an observation of another user over the recent Christmas hols
Recently I was chatting to a fellow 'tog with lots of (un-named) chain-store dSLR camera + kit lenses hanging around his neck and we got around to the CPL on the front of the 18-55. He had it there all the time as tho it was a UV filter .... ie: he had no idea he had to rotate it to see the changing effect it creates in either the sky or reflections etc etc
When I showed him my CPL & how to work it, his jaw dropped
So that gets onto my CPL -
As some here will know, my main camera that gets so much work is an 'old' Lumix with an electronic viewfinder. After 40 years of SLRs to have the responsiveness of an EVF is 'wonderful' and it leaves the 'other' camera, the pentax in its case for much of the time - but that's another story...
While I find the EVF absolutely great for so much of my work, it has one main drawback - there are times when it's too smart for its own good - and using ND or Pola filters are those times
When I rotate the CPL, as the sky darkens the EVF reacts & lightens the screen and so cancels out the effect ... ie: bugga, damn and other things
So I have come up with my solution - my version of "alphabet soup"
Around the CPL's rotating bit, I have stuck a narrow strip of masking tape with an A - B - C every centimetre
To make best use of it, before placing it onto the camera, I hold it and rotate my wrist to observe the best result, note the 'letter' at the top-centre, screw onto the lens and realign the filter to the same location.
It works a treat for me ~ perhaps it'll work for some of you too