被視為 Canon G16 後續機種的 G5X， 擁有和 G7X 一樣優異的畫質，還可以加上外閃。Ikelite G5X 防水殼使用電子線引閃，省電且引閃速度快過 G7X和 Sony RX100系列相機，此外，在手動模式下還可以使用 TTL 閃光

The Canon PowerShot G5 X camera is the latest class-leading model from the venerated G-series of cameras. The G5 X is very similar in image quality and handling to its cousin, the G7 X, plus adds the critical ability to attach an external flash. This electrical flash connection provides extended battery life and rapid fire shooting beyond the capabilities of the G7 X and Sony RX100 series.

Unlike the G16 and other preceding models, Canon finally gives us TTL flash in Manual mode—making this a new favorite for underwater photography.