A cloudy sunset from a few days ago in Hunt Valley, MD. A healthy wind was responsible for causing the motion blur on the trees to the right.
I was testing out the Lee SW150 Mark II filter holder, a contraption which mounts on the front of the lens via an adapter. The SW150 II allows you to use up to two 150 X 150mm square filters, by sliding the filter into the grooves on the front of the filter holder.
For an explanation of filters, you can check out this article:
If you want to use a filter with the Nikkor 14-24mm, a filter holder is mandatory due to the large front lens element, which does not allow standard circular filters.
The SW150 II seemed to do a fine job last night. Used with the Singh-Ray 5 stop ND filter, no significant vignetting or light leakage was noticeable, even at the widest focal length of 14mm.
I used the original SW150 for many years, and the Mark II never version is much easier to assemble and carry.