The giant azulejo tiled outer wall of the Igreja do Carmo in Porto is a great place for street photography. Unfortunately you have to be quick to capture people walking by. It's in a very busy part of town and the best vantage point on the opposite footpath is so narrow with a high wall on one side that you continually have to move into the equally busy road to let people get past. Despite spending a good half hour intermittently blocking the way for locals in intermittent rain, I missed what would have been a truly great shot; a clown in full costume and makeup, hands in pockets, nonchalantly walking by chatting away alongside a cowboy complete with hat and guns. No-one looked surprised. Don't ask me why, something to do with the university I think. I had to make do with photographing the ordinary denizens of Porto.