Canon’s PowerShot G15 is the latest iteration of the popular G-series compacts aimed at enthusiasts. It packs a number of refinements over its predecessor, not the least being a new f/1.8-2.8 high-speed zoom, larger, high-resolution screen and a smaller, more compact body. It also marks the move from CCD to a Canon made CMOS with a fourfold increase in maximum sensitivity and full HD (1080p) video capture. Will the new Canon show any advance in image quality over the earlier G12? Read on to find out.