does to me lol
Another tip which I learnt the expensive way at the weekend :bonk:- when rotating the polariser, always rotate it the same direction as fitting the filter - that way, if it's not on tight enough, and you are over the top of water when using it............:bang:
I won't forget that once I've bought a replacement
My findings agree with Dean - I get stronger polarisation with an LPL.
HoppyUK said:Well, the bit about a circular polariser being a linear poliser with a quarter wave plate on the back is true enough, so they don't upset AF and AE systems, but the rest is not.
In terms of polarising effect, linear and cirular work exactly the same at all times, there's no such thing as left and right handed polarisers and the only thing that polarisers don't work with is reflections off metal so the coin thing will not show any difference.
If you want to know if you have a circular or linear polariser, if it doesn't say so on the rim, then if you look through a circular polariser from the normal lens side it will polarise, turn it round and look through the other side and it will not - the quarter wave foil must be always be on the lens/camera side.
I've just finished reviewing 12 different polarisers for a magazine test, including linear, and I beg to differ. Not surprising really, as a circular polariser is just a linear polariser with a 'circularising' quarter wave plate on the rear. All the polarising is done before it gets to that bit. It cannot 'undo' it.
There are differences between different polarising filters, but not in terms of polarising ability. That was one of the key objectives of the test. Differences in density, colour, flare resistance, coating, mount, but not polarising ability. Decent ones don't impact sharpness either, but cheap ones can.