Wide angle filter dilemma

I can understand your problem Dave, I use a Sigma 10-20 and I bought a Cokin wide angle holder but I still get some vignetting at 10mm and the other problem is that this holder will only hold one filter. I can't advise you on which other system to use but Lee seems to be a favoutite by others on this site. I will be interested to see if what other response you have on this question.
John
John

I've just got my hands on a 10-22 as well. I've found that I get vignetting up to 14mm with the Cokin P filter holder - the one with multiple slots. Think I'll investigate the Cokin X stuff for ND grads.
BTW I've had uneven results using polarisers with wide lenses. On a full frame camera a 17mm lens plus screw in polariser gave me the classic colour gradients across blue skies. I'd expect something similar from a 10mm on the smaller sensor.
BTW I've had uneven results using polarisers with wide lenses. On a full frame camera a 17mm lens plus screw in polariser gave me the classic colour gradients across blue skies. I'd expect something similar from a 10mm on the smaller sensor.

If you upgraded form p to z pro or x-pro (or lee) then drop in polarizers are pretty expensive. I use the z-pro filters on my sigma 10-20 and it works fine at 10mm. I use the lee filter holder (as it's better) and have no problems, though adding on a screw in circular polarizer does causes serious vignetting.
HTH
HTH