Spent most of today on a fixed 100mm macro, which served surprisingly well. It seemed to be the right focal length for natural-looking people shots, without being right up in their face. The long-exposure couple were both on my 15-35mm as I was experimenting with my ND10,000 (!) filter. It turns out that you do not really need fifteen minute exposures for anything, but it is great at removing people. You can’t really tell but Westminster Bridge was heaving for its whole length, but the exposure removed nearly everyone.