Just Posted: Our Canon PowerShot G15 hands-on preview. It would have been easy to assume the small-sensor PowerShot G series was at an end when Canon introduced the 1.5" sensor G1 X, but the G15 continues the 1/1.7" sensor tradition and looks back to the series' beginnings with the addition of a bright lens. The 28-140mm equivalent, F1.8-2.8 lens offers a pretty impressive specification in anyone's book (it's over a stop brighter than the G12, all the way through the range). So is the camera to stand up to the enthusiast camera onslaught? Read our preview to find out our early thoughts.