Somebody on here offered the advice that when it comes to photography gear, "If you don't know that you need it, then you probably don't." Well, I just learned what ND and GND filters do, and now I NEED both.
My problem is... there are so many options out there I'm hoping somebody can steer me in the right direction and tell me, "Get this, it's what you need."
GND Filter: Looking for a 0.6 size because that sounds like it is the best for a variety of conditions (unless I'm told otherwise). I will be fitting it to a Canon 40d w/ Canon 17-55mm f/2.8 IS lens with a 77mm filter size. Most GND's seem to be the square type filter... though I doubt I would be changing filters often, what are your thoughts on round GND's?
ND Filter: I really want one that will be able to slow down shutter speeds a lot during the daytime... like 20 seconds or longer. I'm thinking a 3.0 will do the trick, and am looking at the B+W 77mm Model #110 circular ND filter.
Any recommendations or advice? Thanks in advance.