Canon PowerShot S100 Review
Externally, the S100 looks very much like its immediate predecessors. The original S90/S95 design worked very well, and sensibly Canon hasn't done a lot to change it. The excellent multi-functional 'Lens Control Ring' that can be used to change a wide range of settings is still in place, and is accompanied by a rear control dial that no longer provides direct access to exposure compensation (as per the S95) but changes shutter speed in manual exposure mode, and exposure compensation (in concert with the dedicated exposure compensation button on the camera's rear) as well as flicking through images in review mode, menu navigation and so on.
The rear layout has been changed from the S95, most prominently to add a direct movie record button. The S95's 'Ring Func' and 'S' buttons have been consolidated to a single customizable control on the rear. The one control that no longer has direct access is the self-timer, which is now set through the 'Func' menu. The Focus and Flash modes can be set directly, and most remaining options can be accessed quickly using the 'Func' menu. This makes for a compact camera that provides at least as much external control as most entry level DSLRs. A quick switch of the top dial to the green Auto position puts the camera into fully automatic point-and-shoot mode.
The top view shows that the S100 retains the slim lines of its predecessors, and reveals the minimalist profile of the front grip. On here you'll find the On/Off button, the zoom lever surrounding the silver shutter button, and the exposure mode dial. The Ring Func button has been displaced by the GPS unit, so there's no longer any chance of turning the camera off accidentally by mistaking it for the power button.