Camera size.com is a great way to virtually, visually get a sense of how two different cameras compare in their physical dimensions. I’m on a pocketable kick right now and I’m digging the Sony RX100 a little more than my Canon S100. What I don’t like about the Sony is that it’s almost a quarter inch thicker than the Canon. It’s not a deal-breaker, but it does make a difference in the noticeable bulk you wind up carrying in your pocket. Visit the site and play around with the many views available for a variety of camera selections.