During our visit to Paris, we took a day trip to London that gave us roughly 11 hours to explore the bustling city. Since I'm still struggling with editing my images from Paris, I decided to shift my attention to some long exposure images from London. Here are three that were shot using the X100S and the Lee Seven5 filter system I purchased shortly before our trip. The items I ordered included a filter holder, 49mm and 58mm adapter rings (for the X100S and the XF 14mm), a Big Stopper 3.0 ND, and a Soft-Edge 0.9 Grad ND. I haven't used the system enough to decide if it's a better solution than the screw-on ND filters I've been using, but I will say that the Grad ND came in handy on many occasions.
Big Ben - 58 seconds at f/11
Tower Bridge - 240 seconds at f/8
London Eye - 300 seconds at f/11