So I've pretty much set my mind on getting a Sigma 10-20mm lens to meet my wide angle needs. I've tried to look for some discussion on the boards about filters, there's obviously pleanty of views out there, most very much pro or very much against filters - not a lot of middleground.
As I understand it digital cameras have a lot of built-in processing that negates many of the benefits associated with using filters (further negated by post editing which I prefer to avoid as I just don't have the time for it). I'm still very tempted to get a polarizer filter to use with this lens, particularly for use on landscapes, I'm also tossing up whether to get a grad filter particularly for use with sunsets/sunrises.
I'm reasonably comfortable with the choice to get a Polarizer but don't know a lot about the grad filters (did these use to bear the slang term cigar filter??). Some posts I've seen here, and elsewhere, really stress that they are a waste of time and money, others are a little more open to it. Of those who are open to it how would you rate the effect on your shots for sunsets/sunrises and is there a particular filter you would suggest that I look at for use with this lens?