I'm not sure what the filter did for you in this shot, Bernard - how long was your exposure and what aperture were you shooting at? The water is a bit blurred but the lake does not look like there is a lot of wave action when you took the shot. In fact the whole shot looks a touch soft, even the the trees on the other side of the lake could use some sharpening.
The image does look a touch underexposed and the colour of the water looks a bit more green than I would expect; in fact I think the whole image has a touch of a green / cyan colour cast. You've also started to block up the shadow details in the dark areas (i.e. the rocks in the foreground). A touch more contrast wouldn't hurt either.
+1 for Manfred.
I can answer the easy one; 12 seconds at f/16 (and iso 100 on Sony SLT-A65 at 50mm).
I also agree with your other points Manfred.
Yes, Manfred said everything...i liked the image
Radu,yes ,trying for that effect ,couldn,t seem to get it.....
Hi Benjy,
I also get the feeling that the sea (?) was quite calm that day, which hasn't helped.
Manfred is correct about the time aspect, consider that within the 12 seconds, if nothing much happens, in terms of wave height and resultant spray height, then you won't see much 'white softness' or 'fog' around the rocks, but on a stormy day, you might have a bit more success.
If you also have a polarising filter, you could always try adding that too. It may compound any colour cast and add vignette to a wide angle though, but it would remove almost another two stops of light, so your 12 seconds could become more like 40 seconds.
Cheers, Dave