Earlier this week I was shooting for a new brochure for London & Partners, the Mayor of London's own promotional company.  Their offices look out over London Bridge, the Tower of London and many of the iconic buildings in the City, and I had to showcase these views as well as the interiors.  On a sunny day this is impossible with a single exposure, so I shot two or three for each scene and composited them later in Photoshop.  By contrast, I took this photo as I was setting up and didn't need to make any adjustments at all, luckily.