I originally wasn't going to bring my SLR along at all on my trip, mainly because it would take up a pile of room. As the departure day loomed in front of me though, I just couldn't bring myself to travel the world with only my point and shoot. As a compromise I decided to bring along the Canon EF 28mm f/1.8 lens, which I bought right before coming. On a 1.6x crop factor it acts more like a 44mm lens, which is close to a standard lens but slightly wider. I was hoping that would be a useful field of view for most situations. I find it a little long for walking around the city, but it's decent enough ...