I always melt my brain but it's how I've learnt what I know about photography so far. I like melting my brain.
Yeah true, it would be overexposed. What I really was trying to say was that I might take a shot correctly exposed, say a 1 second exposure, but perhaps it might not give me the desired effect, i.e. a silkier sky or even smoother water. So presumably that would need a longer exposure. But yeah, I'd then need to change to a smaller aperture like somewhere between F10 to f16 to be able to get a 30 second exposure or thereabouts such as wookie's photos. Sorry, I'm just trying figure it out in my mind. I'm sure it will all become apparent when I get the filter and try it out..
Ah right, that's cool as I thought it always had to be manual focusing before putting any ND filter on.