Even a great camera won’t take memorable shots if it’s so big that you tend to leave it at home. So companies are creating models that aim for a happy medium between pocketable point-and-shoots and higher-quality SLRs. This new breed can change lenses to suit a shot, like an SLR does, but ditches the optical viewfinder and the bulky mirror that sends it light. That means compromise: Autofocus isn’t SLR-fast, there are fewer lenses, and point-and-shoots are still smaller. We tested which interchangeable-lens compacts (ILCs) hit the sweet spot.