I recently went to Virginia Waters, Ascot, to practise some long exposure shots. I was using my stock 17-55mm lens with 75mm Format ND filters. I stopped down 6 stops using the filters and cut out the haze on the lake shot with a 105mm Polarising filter (adding an extra 1 1/2 stop to total 7 1/2 stops down). As it was such a bright morning, most were shot at around 2 seconds. There was some minor tripod shake due to the wind (and the cheap tripod), but the results seem OK! Nonetheless, I was pleased with the saturated colours the long exposures provided.
Hope you like them!
JP Collins Photography