Canon G15 review | Compact cameras Reviews | TechRadar:

"After quite a significant waiting period, the Canon G12 has finally been upgraded in the shape of the 12.1 million pixel Canon PowerShot G15, unveiled at Photokina 2012.
At first glance, the Canon G15 looks pretty similar to the Powershot G12, but there are a few significant differences. The most notable of these is the stacked or overlapping dials on the top that enable both the mode dial and the exposure compensation dial to be squeezed on to the right side of the camera's top plate.
Although these could potentially be a turn-off for novices, they enable more experienced photographers to set the exposure mode and adjust the exposure quickly."