I did a quick test on Friday with one of my Lee filters ND grad's for timelapse...
https://vimeo.com/62413221Here I used a 1.2 Lee Hard ND grad filter which equates to a 4 stop graduated filter. I have a 3 and a 4 stop soft grad also, but the hard is quite nice for a more abrupt graduation from the sky upwards.
The effect almost looks semi - HDR, giving more detail than my 1DX could capture in single frames.
Great for sunsets also, plan on using it with my dolly etc more and more often. Definetly happy with purchasing it!